#22 On this machine, the letters are folded to correct size for insertion into V-Mail envelops, an operation which requires about eight minutes per roll.

Victory Mail: The WWII Program that Significantly Reduced the Cost and Time of U.S. Military Postal Service

#22 On this machine, the letters are folded to correct size for insertion into V-Mail envelops, an operation which requires about eight minutes per roll.

WWII