United States, Office of Strategic Services., Research and Analysis Branch. "No. 3438--R & A, OSS; 14 June 1944." Shows roads and trails. Includes location maps. Reproduction Branch, OSS.
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United States, Office of Strategic Services., Research and Analysis Branch. "No. 3417--R & A, OSS; 22 June 1944." Shows roads, railroads, and trails. Includes location map. Reproduction Branch, OSS.
3. Batanes
United States, Office of Strategic Services., Research and Analysis Branch. "No. A, 3465--R & A, OSS." "15 Feb. 1945.". Reproduction Branch, OSS.
4. Batangas
United States, Office of Strategic Services., Research and Analysis Branch. "No. A, 3446--R & A, OSS." "2 Feb. 1945.". Reproduction Branch, OSS.
5. Sorsogon
United States, Office of Strategic Services., Research and Analysis Branch. "No. A, 3490--R & A, OSS." "2 Feb. 1945.". Reproduction Branch, OSS.