Access Restricted Archival objects in this container: Synchronizer, 804A, 1931 April 17 to 1931 April 22 Gear housing-synchronizer, 804B, 1931 April 17 to 1931 April 20 Synchronizer, 805A, 1931 April 21 to 1931 April 23 Synchronizer, 806, 1931 May 13 to 1931 May 14 Roller and sprocket, 843, 1931 September 24 to 1931 September 25 #9 drill and countersink (CTSK) for #10 wood, 844A, 1931 September 24 #18 drill and ream for #2 taper pin, 845A, 1931 September 23 to 1931 September 24 #4 machine, 846, 1931 September 14 to 1931 September 30 #4 machine extension, 847, 1931 September 15 to 1931 September 17 #29 drill and ream for #1/10 taper, 848, 1931 September 12 to 1931 September 26 Cage and float, 849, 1931 September 03 Flow meter, 850, 1931 March 21 to 1931 March 31 Keeper roller, assembly-negative take off diagonal, 877, 1931 July 21 Bushing, valve, and spreader, 879, 1931 March 16 Weir clamp strap-outside, 880, 1931 March 10 Guide pin plate strap-outside, 881, 1931 March 10 Guard roller-large, 882, 1931 February 26 Guard roller-small, 883, 1931 February 26 30 gallons per minute filter, 884, 1931 January 16 to 1931 January 20 60 gallons per minute filter, 885, 1931 January 20 to 1931 January 21 Clamp bracket and guard rail, 886, 1931 April 18 Spacer, roller, and plate, 887, 1931 February 18 to 1931 March 09 Shaft and final wash roller, 888, 1931 February 28 to 1931 March 05 Keeper roller, shaft, bracket, and assembly-final wash roller, 889, 1931 March 03 to 1931 March 05 Plug, clamp, lock nut, nipple, elbow, and jet plug, 891, 1931 January 12 to 1931 February 26 Load More