SRPA file LDP758986PS classification of a standard Liberty Defense Tower.
Transcript[]

WAR DEPT. GUN TOWER ASSEMBLY
ARLINGTON WICHITA TOWER (SIDE VIEW)
APPROVED: 10/20/49 APPROVER:(sig "KYP")
DOC NO.: LDP758986PS
RAS 10/17/49 REV. A
ASSOC. DOC: LDP758986PS
SPECIFICATIONS:
CALIBER: 90 MM WEIGHT OF THE PROJECTILE: 10.61 KG (17.21 LB)
RANGE: APPROX. 28 MILES
ELEVATION : +85 TO 15 DEGREES
TRAVERSE : 360 DEGREES.
ASSOC. DOC: LDP758012EL LDP759540YC SCNP458849
Trivia[]
- The sheet says "SCNP" but the filename is "SCNR".