Skip to main content
Contact Us

Marvin Camras wire recordings

 Collection — Multiple Containers
Identifier: 031.07.07

109 spools of magnetic wire recordings, presumed to be test samples for experiments conducted by Marvin Camras while developing wire recording technology at Armour Research Foundation. Spools (3½" diameter) and containers are labeled with various numbers and occasional text; e.g., one reads: 387, W477, 270/1926, HALF to w[?]ear; another reads: No - 208, 1.- B. 90% red., W389.

  1. Inventory of Spool Numbers for Acc. No. 2000.050 Note: Spools listed by "W" number; note that most spools are in boxes and that additional numbers are included on the boxes. Numbers are also recorded on spools, but the contents of the boxes have not been matched (verified) to the number recorded on the box. "Sr. No." "Details" "Additional Info." 1 W113 2 W114 3 W256 4 W257 5 W258 6 W259 7 W260 8 W261 9 W264 10 W285 11 W286 12 W287 13 W296 14 W297 15 W310 16 W315 17 W311, 317, 324 though 327, 330 18 W322 19 W325 2 boxes with same number 20 W325 2 boxes with same number 21 W338a 22 W338b 23 W339 24 W340 25 W343 26 W344 27 W345 28 W346 - 48 with 324 interspersed 29 W346 30 W347 31 W352 32 W355 33 W356 34 W358 35 W359 36 W360 37 W361 38 W362 39 W363 40 W371 41 W373 42 W374 43 W375 44 W376 45 W377 46 W378 47 W384 48 W385 49 W386 50 W387 51 W388 52 W389 53 W390 54 W391 55 W403 56 W405 57 W406 58 W407 59 W408 (empty box) 60 W409 61 W410 62 W414 63 W415 64 W417 (empty box) 65 W418 66 W419 67 W420 68 W421 69 W422 70 W423 71 W425 - 38 72 W426 - 68 73 W431 74 W452 2 boxes with same number 75 W452 2 boxes with same number 76 W477 77 W478 2 boxes with same number 78 W478 2 boxes with same number 79 W485 80 W486 81 W495 82 W497 83 W498 84 W509 85 W526 86 W532 87 W541 88 W545 89 W546 90 W553 91 W554 92 W654 93 March of Time on China (Jan. 45) 1 out of 4 boxes with green labels 94 Pobielniak Party, Spool 1 (12/16/44) 2 out of 4 boxes with green labels 95 Pobielniak Party, Spool 2 (12/16/44) 3 out of 4 boxes with green labels (labels crossed out) 96 Chicago Notes as recorded by NBC 4 out of 4 boxes with green labels (labels crossed out) 97 1002 Wires Boxes without spools 98 Spool G/ STD Record #2 Boxes without spools 99 Spool D 508 - 517 795 - 800 Boxes without spools 100 Spool No. 430 (Markings on adhesive labels) Spools without boxes 101 Spool No. 431 (Markings on adhesive labels) Spools without boxes 102 B-152, P.43, 6 - W ???, 7 - W225 [best guess] (Markings on adhesive labels) Spools without boxes 103 Amer. Steel Samples (Markings on adhesive labels) Spools without boxes 104 247H (Markings on paper band) Spools without boxes 105 B-598-2 (Markings in pencil on spool) Spools without boxes 106 MC P.15 (Markings in pencil on spool) Spools without boxes 107 1 min JK (Markings in pencil on spool) Spools without boxes 108 3 min 40-Sec. OA 60% (Markings in pencil on spool) Spools without boxes 109 PR Hobson's Speech BAD (Markings in pencil on spool) Spools without boxes 110 2 spools with no markings 111 976 A Box fragments with markings not matched to spools 112 2 min Wire Sample from A. S. & W Co. Box fragments with markings not matched to spools 113 M.C. JK Recorded for Dr. Poulter Box fragments with markings not matched to spools 114 Deck of reference cards

Dates

  • Creation: circa 1940-1950

Creator

Language of Materials

Records are in English.

Conditions Governing Access

Available for Research

Collection Size

109 reels

Expand All

Paul V. Galvin Library

35 West 33rd Street | Chicago, IL | 60616
312.567.6847 library@iit.edu