Typed Letter Signed.
This interesting literary character founded the R.R. Bowker Company (which still exists) in 1872, co-founded "Library Journal" (which also still exists) in 1876, and acquired "Publishers' Weekly" (you guessed it) in 1879 -- among other lasting bookish and bibliographic endeavors. TLS, 1p, 5½" X 8½", New York, NY, 1923 January..... More