MKUltra Subproject 40

MKUltra Subproject 40 was a CIA project that operated during the 1950s. The surviving paperwork shows financial transactions and administrative records. In fiscal year 1956, the project obligated $41,620.00 in total funds. Multiple invoices document payments for unspecified services totaling amounts such as $27,734.00, $13,866.00, and $21,734.00. The project involved the Technical Aspects of Chemical Warfare, with two books on this topic dated April 1946 being loaned as part of the work. Payments were made via cashier's checks and official checks to redacted recipients. Records show invoices numbered 3, 4, and 5, processed through the CIA's TSS/Chemical Division. A memorandum dated April 12, 1957 documents the return of $364.74 in unspent funds to Finance. The project appears to have extended beyond its initial fiscal year, with a final accounting note indicating anticipated additional obligations.