I found a large painting of geese in flight by Letterman at a garage sale in Nevada. I have heard different things. Someone told me he is a Russian painter, and his paintings are worth a decent amount. BUT........I have tried looking him up for a while, and I can't find anything helpful to substantiate anything I have been told about him. I recently e-mailed one of the painting experts at the antiques road show, and asked about Letterman and his paintings. When I get a response (Or if) I will post the reply I get.