Knight, Edward Henry(1824-1883). American Patent Attorney; editor of Knight's Mechanical Dictionary and compiler of the Library of Poetry & Song (edited by William Cullen Bryant).   ALS, 1 p., NY, March 4, 1878. On stationery from French's Hotel, NY. Written while traveling: "My Dear Donaldson -    Trying to get through in tie to take the steamer from N.Y. on Saturday I was unable to call when in Phila. this morning.   I enclose the letters with autographs which I think will please you..."  Very good.