Happiest time is now /
composed for the guitar ... by James M. Deems.
Deems, J. M. (James Monroe). (1853). Happiest time is now. Baltimore: Henry McCaffrey.
Deems, James M. (James Monroe), 1818-1901. Happiest Time Is Now. Baltimore: Henry McCaffrey, 1853.
Warning: These citations may not always be complete (especially for serials).