Henry Stimson, who died OTD in 1950, shut down U.S. cryptanalysis after World War I, saying "Gentlemen do not read each others' mail"; see where cryptanalysis had been done in #NewYorkCity https://cromwell-intl.com/travel/usa/new-york-black-chamber/?s=mb #travel #cybersecurity
Bob's Pages of Travel, Linux, Cybersecurity, and MoreFinding the American Black Chamber in New YorkThe American Black Chamber, America's first peacetime cryptographic bureau and a forerunner of the NSA, and current photographs of its sites in New York