Item 20316 - Post Office, Portland, ca. 1940 Item 20316 - Post Office, Portland, ca. 1940 Contributed by Maine Historical Society Item 20316 Zoom 4443px x 3060px - 14.8"w x 10.2"h @ 300dpi | Need a larger size? *Credit line must read: Collections of Maine Historical Society Image Info The Portland Post Office on Forest Avenue, in the 1940s. The Post Office was built in 1933-1934. Show Details