[Ephemera] Group of four letters. Including one TLS from Frederick Eugene Powell on his elaborate letterhead, date May 14, 1931; one ALS from Robert Harbin on his letterhead dated Oct. 14, 1972; one page of a TLS from Claude Alexander Conlin on his pictorial letterhead; and a one page ALS from Oswald Rae to Donald Crombie accompanied by two typed pages of Rae's patter for the Thayer Ring and Rod effect. V.p., v.d. Generally good condition.