The greatest diorama builder of all time, Bob Letterman died last year in May 2022. His Death Notice is here - William Robert (Bob) Letterman | Greenlawn (greenlawnfuneralhome.com) and can be added to by those wanting to pay their respects.
His daughter, Gail Spencer Choate, has released highly detailed footage of his last giant diorama that will remain forever unfinished it seems = Bob Letterman, Master of the Large Diorama: His Unfinished Masterpiece - YouTube.
An exceptional and ground-breaking military and civilian modeller and artist, a Guinness Books of Records entrant as a police detective, a very successful businessman of a highly innovative model company and by all accounts, a charming man.
Without a doubt, it was his incredible dioramas in 1/35, 120mm and 1/24 scale that sealed his place in modelling history.
May he rest in peace.