APA (7th ed.) Citation

(1902). [Post Office Department circular on envelope contractor]. [publisher not identified].

Chicago Style (17th ed.) Citation

[Post Office Department Circular on Envelope Contractor]. [Washington]: [publisher not identified], 1902.

MLA (9th ed.) Citation

[Post Office Department Circular on Envelope Contractor]. [publisher not identified], 1902.

Warning: These citations may not always be 100% accurate.