Zf347. This is the writing on back of the previous image and my translation:
Title: 3528/ Last refuge of the Americans in the Philippines
Our map transmits an understandable image of the Island Corregidor situation in Manila Bay on the Philippines-Island Luzon, which, as the Japanese small flags marked positions show, is completely encircled/locked up from the land side.
Source, ownership information: 8th Feb 1942
The other stamps are copyright statements.