Alexander Buchman Alexender Buchman was a guard at Coyoacan in late 1939-early 1940, when he was replaced by Sheldon Harte. Buchman worked as a consulting engineer. Van Heijenoort Remembered Against the Current, No. 12-13, January-April 1988 Share this: Click to share on X (Opens in new window) X Click to share on Facebook (Opens in new window) Facebook Click to share on WhatsApp (Opens in new window) WhatsApp Click to email a link to a friend (Opens in new window) Email Click to print (Opens in new window) Print