“His career went into a tailspin in 1947, when his song “Who Put the Benzedrine in Mrs. Murphy’s Ovaltine” put him on the music industry blacklist. His own drug use led to his decline, and with the rising popularity of young rock-and-roll musicians among teenagers in the 1950s, older musicians were not in demand. He spent time in and around Miami during the 1950s, and just before Christmas 1956 he appeared at the Ball & Chain on the same bill with Billie Holiday. In the 1960s, when Gibson saw the huge success of The Beatles, he decided to switch to rock-and-roll. By the 1970s, he was playing hard rock, blues, bop, novelty songs and a few songs that mixed ragtime with rock-and-roll; and his hipster act became a hippie act. His old records were revived by Dr. Demento, particularly “Benzedrine” which was included in his 1975 compilation album Dr. Demento’s Delights.
His comeback resulted in three more albums. Harry the Hipster Digs Christmas, made of new recordings in 1974, is a home recording and is not noteworthy. Two professionally produced albums were released after this: Everybody’s Crazy but Me, (its title taken from the lyrics of “Stop That Dancin’ Up There”), by Progressive Records in 1986, and Who Put the Benzedrine in Mrs. Murphy’s Ovaltine released in 1989 by Delmark Records. Those two include some jazz, blues, ragtime, and rock and roll songs about reefer, nude bathing, hippie communes, strip clubs, male chauvinists, “rocking the 88s”, and getting hip to Shirley MacLaine.”