Martin Horton
| Image | Spec No. | Card# | Item | Grade | Pop | Pop Higher | Owner's Comments |
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| 0500100010 | | PLATT ADAMS | | | | |
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| 0500100020 | | DAN AHEARNE | | | | |
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| 0500100920 | | ABE ATTELL | 2 | 7 | 65 | |
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| 0500100030 | | CHAS J. BACON JR | | | | |
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| 0500100930 | | MATTY BALDWIN | 4 | 9 | 12 | |
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| 0500100940 | | PATSY BRANNIGAN | 4 | 14 | 30 | |
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| 0500100950 | | KNOCK-OUT BROWN | 3 | 6 | 46 | |
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| 0500100960 | | SAILOR BURKE | 3 | 7 | 37 | |
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| 0500100040 | | WALTER BURSCH | | | | |
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| 0500100770 | | HARRY CLINE | | | | |
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| 0500100050 | | ROBERT CLOUGHEN | | | | |
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| 0500100060 | | TOM COLLINS | | | | |
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| 0500100970 | | FRANKIE CONLEY | 4.5 | 2 | 12 | |
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| 0500100980 | | YOUNG CORBETT | 4 | 11 | 34 | |
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| 0500100990 | | JOHNNY COULON | 2 | 2 | 53 | |
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| 0500101000 | | LEACH CROSS | 4 | 16 | 28 | |
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| 0500100070 | | JAMES CROWLEY | | | | |
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| 0500100790 | | ALBERT CUTLER | 5 | 6 | 7 | |
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| 0500100780 | | ALBERT CUTLER/FRAMED PORTRAIT | | | | |
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| 0500100800 | | JOHN DALY/FRAMED PORTRAIT | | | | |
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| 0500100090 | | C.M. DANIELS/HEAD TO WAIST | | | | |
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| 0500100080 | | C.M. DANIELS/SEATED BY POOL | | | | |
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| 0500100880 | | ALFREDO DE ORO | 1 | 2 | 28 | |
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| 0500101010 | | AL DELMONT | 3MC | 1 | 34 | |
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| 0500100810 | | CALVIN DEMAREST | 1 | 3 | 22 | |
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| 0500101020 | | DAVE DESCHLER | 4 | 14 | 17 | |
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| 0500101030 | | YOUNG DONAHOE | 4 | 8 | 32 | |
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| 0500100710 | | FINDLAY DOUGLAS | 1 | 2 | 38 | |
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| 0500101040 | | JEM DRISCOLL | 3.5 | 3 | 41 | |
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| 0500100670 | | ALEX DUNBAR | | | | |
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| 0500100100 | | JACK ELLER | | | | |
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| 0500100110 | | RAY C. EWRY | | | | |
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| 0500101050 | | CHARLES EYTON/REFEREE | 2 | 1 | 29 | |
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| 0500100120 | | W.C. FIELDING | | | | |
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| 0500100130 | | JOHN FLANAGAN/FULL LENGTH | | | | |
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| 0500100140 | | JOHN FLANAGAN/HEAD TO WAIST | | | | |
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| 0500100150 | | R.E. FRIZELLE | | | | |
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| 0500101060 | | JOE GANS | 3 | 12 | 42 | |
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| 0500101070 | | GEORGE GARDINER | 2 | 6 | 49 | |
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| 0500101080 | | JIMMY GARDNER | 3 | 7 | 35 | |
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| 0500100160 | | S.P. GILLES | | | | |
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| 0500100170 | | H.E. GISSING | | | | |
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| 0500100180 | | ANDREW GLARNER | | | | |
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| 0500101090 | | ABE GOODMAN | 4 | 7 | 42 | |
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| 0500101100 | | JACK GOODMAN | 4 | 14 | 30 | |
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| 0500100190 | | BUDD GOODWIN | | | | |
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| 0500101110 | | CHARLEY GRIFFIN | 3 | 6 | 32 | |
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| 0500100630 | | CHARLES K. HAMILTON | | | | |
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| 0500100200 | | H.J. HANDY | | | | |
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| 0500100210 | | J.L. HARTRANFT | | | | |
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| 0500100220 | | JOHNNY HAYES | | | | |
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| 0500100230 | | HARRY HAYWOOD JR. | | | | |
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| 0500100680 | | WILLIAM HEINS | | | | |
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| 0500100720 | | F. HERRESHOFF | | | | |
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| 0500100240 | | HARRY HILLMAN | | | | |
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| 0500100730 | | JACK HOBENS | | | | |
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| 0500100250 | | HANS HOLMER | | | | |
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| 0500100830 | | WILLIE HOPPE | | | | |
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| 0500100820 | | WILLIE HOPPE/FRAMED PORTRAIT | 2 | 1 | 33 | |
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| 0500100640 | | ARCH HOXSEY | | | | |
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| 0500100840 | | THOMAS HUESTON | 4 | 10 | 13 | |
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| 0500101120 | | BATTLING HURLEY | 5 | 18 | 15 | |
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| 0500101130 | | DICK HYLAND | 3 | 4 | 34 | |
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| 0500100260 | | FRANK C. IRONS | | | | |
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| 0500101140 | | JOE JEANNETTE | 3 | 8 | 41 | |
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| 0500101150 | | JAMES JEFFRIES | 2 | 9 | 108 | |
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| 0500101160 | | JAMES J. JEFFRIES | 2 | 10 | 91 | |
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| 0500100270 | | HARRY JENSEN | | | | |
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| 0500100280 | | THURE JOHANSSON | | | | |
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| 0500100690 | | LEE R. JOHNS/FRAMED PORTRAIT | | | | |
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| 0500101170 | | JACK JOHNSON/FRONT VIEW | 2 | 13 | 116 | |
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| 0500101180 | | JACK JOHNSON/SIDE VIEW | 3 | 37 | 134 | |
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| 0500100650 | | RALPH JOHNSTONE | | | | |
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| 0500100290 | | JOSEPH JORDAN/ROLLERSKATER | 3 | 5 | 31 | |
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| 0500101190 | | AL KAUFMAN | 3 | 5 | 34 | |
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| 0500100300 | | W.J. KEATING | | | | |
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| 0500100850 | | JEROME KEOGH/FRAMED PORTRAIT | 5 | 8 | 13 | |
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| 0500101200 | | STANLEY KETCHELL | | | | |
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| 0500101210 | | BERT KEYES | 4 | 14 | 29 | |
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| 0500100310 | | ABEL KIVIAT | | | | |
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| 0500101220 | | FRANK KLAUS | 2 | 1 | 34 | |
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| 0500101230 | | PATSY KLINE | | | | |
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| 0500100320 | | W.J. KRAMER | | | | |
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| 0500101240 | | SAM LANGFORD | | | | |
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| 0500100330 | | WALTER LEE | | | | |
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| 0500101250 | | HARRY LEWIS | 3.5 | 1 | 43 | |
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| 0500101260 | | WILLIE LEWIS | 2 | 3 | 32 | |
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| 0500100340 | | GUSTA LJUNGSTROM | | | | |
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| 0500101270 | | YOUNG LOUGHREY | | | | |
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| 0500100740 | | GEORGE LOW | 1 | 2 | 47 | |
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| 0500100350 | | EMILO LUNGHI | | | | |
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| 0500100380 | | LOU MANLEY | | | | |
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| 0500101300 | | JOHNNY MARTO | 2.5 | 2 | 52 | |
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| 0500100370 | | J.J. MCENTEE | | | | |
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| 0500101280 | | PACKEY MCFARLAND | | | | |
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| 0500101290 | | PHIL MCGOVERN | | | | |
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| 0500100360 | | M.J. MCGRATH | | | | |
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| 0500100390 | | FRED MEADOWS | | | | |
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| 0500101310 | | HONEY MELLODY | 4 | 11 | 39 | |
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| 0500100660 | | J.B. MOISANT | | | | |
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| 0500101320 | | OWEN MORAN | 2 | 2 | 44 | |
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| 0500100870 | | ORA MORNINGSTAR | 1 | 2 | 29 | |
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| 0500100860 | | ORA MORNINGSTAR/FRAMED PORTRAIT | 5 | 6 | 5 | |
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| 0500101330 | | TOMMY MURPHY | 4 | 11 | 34 | |
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| 0500101340 | | FRANKIE NEIL | 4 | 14 | 30 | |
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| 0500101350 | | BATTLING NELSON | 1.5 | 2 | 43 | |
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| 0500101540 | | FIGHTING DICK NELSON | 4 | 7 | 28 | |
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| 0500100750 | | GIL NICHOLLS | | | | |
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| 0500101370 | | YOUNG NITCHIE | | | | |
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| 0500100400 | | SMYTHE NORTHRIDGE | | | | |
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| 0500100410 | | GEORGE J. OBERMEYER | | | | |
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| 0500101380 | | PHILADELPHIA JACK O BRIEN | | | | |
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| 0500100420 | | THOMAS O CALLAGHAN | | | | |
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| 0500101390 | | TOMMY O KEEFE | | | | |
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| 0500101400 | | TOMMY O TOOLE | | | | |
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| 0500101410 | | BILLY PAPKE | | | | |
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| 0500100430 | | PAUL PILGRIM | | | | |
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| 0500100440 | | HARRY PORTER | 6 | 7 | 1 | |
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| 0500100450 | | JAMES RECTOR | | | | |
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| 0500100700 | | GLENN RIDDELL | | | | |
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| 0500100460 | | FRANK RILEY | | | | |
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| 0500100470 | | W.C. ROBBINS | | | | |
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| 0500100480 | | LAWSON ROBERTSON | | | | |
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| 0500100490 | | J.A. RUDDY | | | | |
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| 0500101420 | | UNK RUSSELL | | | | |
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| 0500100500 | | HARRY SEDLEY JR. | | | | |
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| 0500100510 | | PERCY SELLEN | | | | |
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| 0500100520 | | MELVIN W. SHEPPARD/FRONT FACE | | | | |
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| 0500100530 | | MELVIN W. SHEPPARD/SIDE FACE | | | | |
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| 0500100540 | | MARTIN SHERIDAN | | | | |
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| 0500100760 | | ALEX SMITH | | | | |
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| 0500100550 | | C.C. STEINERT | | | | |
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| 0500101430 | | JIM STEWART | | | | |
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| 0500101440 | | HARRY STONE | | | | |
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| 0500101450 | | JACK TWIN SULLIVAN | | | | |
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| 0500100560 | | JAMES P. SULLIVAN | | | | |
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| 0500101460 | | MIKE TWIN SULLIVAN | | | | |
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| 0500101470 | | JOHNNY SUMMERS/SEATED | | | | |
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| 0500101480 | | JOHNNY SUMMERS/STANDING | | | | |
|
| 0500100900 | | GEORGE SUTTON | 4 | 6 | 13 | |
|
| 0500100890 | | GEORGE SUTTON/FRAMED PORTRAIT | 4.5 | 4 | 8 | |
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| 0500100570 | | E.J. SWEENEY | | | | |
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| 0500100580 | | CLARENCE B. TIPPETT | | | | |
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| 0500100590 | | C.D. TRUBENBACH | | | | |
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| 0500101490 | | EDDIE WALSH | | | | |
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| 0500101500 | | JIMMY WALSH | | | | |
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| 0500101510 | | FRED WELSH | | | | |
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| 0500101520 | | BILLY WEST | | | | |
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| 0500100910 | | COWBOY CHARLES WESTON | 4 | 8 | 16 | |
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| 0500100600 | | EDWARD PAYSON WESTON | 2MC | 1 | 20 | |
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| 0500100610 | | R.P. WILLIAMS | | | | |
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| 0500100620 | | HAROLD A. WILSON/WALKER | | | | |
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| 0500101530 | | AD WOLGAST | | | | |