Simpan Rahasia

A propaganda poster created by Poesat Tenaga Peloekis Indonesia (P.T.P.I) in 1945 for the Indonesian proclamation of freedom on August 17, 1945, features a man with a finger to his lips with the text "Simpan Rahasia," which means "Keep Secrets." This emphasizes the importance of maintaining silence and not divulging information to the colonizers. This poster is part of a scrapbook titled "We Struggle with Posters (P.T.P.I.)," containing reduced reproductions of P.T.P.I. posters from 1945-1947, addressing both Indonesian and global issues.