Happy days [1923]musical workMy valentineRobertson, Charles H. (Composer)ComposerRobertson, Charles H.ComposerHarris, Robert E. (Lyricist)LyricistHarris, Robert E.Lyricist[1923]printscoregeneralRobertson, Charles H. (Composer), Composer; Harris, Robert E. (Lyricist), LyricistM1508 Happy days [1923]loc.natlib.m1508.23731http://lcweb2.loc.gov/diglib/ihas/loc.natlib.m1508.23731/item.html?ID=2373123731M1508 Happy days [1923]It's Showtime! Sheet Music from Stage and Screenhtml/songsinshows/songsinshows-home.htmlm1508m1508showsloc.natlib.m1508.23731http://lcweb2.loc.gov/diglib/ihas/loc.natlib.m1508.23731/Music Division, Library of CongressDLC150709loc.natlib.m1508.23731