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GRANT CENT. ANNEX. N.Y.13. 1937 APR21 1230AM BUY U.S. SAVINGS BONDS ASK YOUR POSTMASTER [[upside down]] BUY U.S. SAVINGS BONDS ASK YOUR POSTMASTER GRAND CENT. ANNEX. N.Y.12 1937 APR20 430PM
Transcription Notes:
The back of the envelope is stamped with two nearly identical stamps--at the top of the envelope, they're upside right, and at the bottom of the envelope, they're upside down.