[JUVENILE--AVIATION]. PARLEY, PETER, Editor. The Balloon Travels of Robert Merry and his Young Friends, over various Countries in Europe. New York, 1866. 8vo, original cloth, some soiling; marginal dampstaining -- TROWBRIDGE, J.T. Darius Green and his Flying-Machine. Boston, 1910. 8vo, contemporary decorated boards, light soiling. (2)