Per-Erik Almgren
United States Postal Service. Operations Dept. Maintenance Division. Operating Equipment Branch
Robert P. Higgins
Unknown Author
United States Postal Service
George Willard Reid
W. M. Hickey
Philippines. Bureau of Posts.
Fănică Gavril
Michael J. Corinthios
Christopher E. Bunch
M. Schmidt-Schauss
United States. General Accounting Office
Way, David
Fanica Gavril
Manfred Schmidt-Schauss