The United Air Lines from San Francisco, CA used a UAL-8, "U.A.L. NOV. 1954" value is decent at $5. was only used that one month.
The Newark, NJ "VMC OCT '38" is a type C-23 used by Vogue Manufacturing Co. from 1938-46 for 220 months.
The New York, NY "G.V.P. JUL '38" is a type C-2 used by an unknown user, used 1938-42 is one of the 1st ever used, Likely also used 'GVP' 1954-58 & "GV" that started right after from 1958-59.
The Chicago, IL "3 M AUG '40" is for Minnesota Mining & Manufacturing Co. used a type C-23 from 1938-41.
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