He specialized in Christmas songs and wrote many holiday standards, including "Rudolph, the Red-Nosed Reindeer" (a hit for Gene Autry and others), "Rockin' Around the Christmas Tree" (a hit for Brenda Lee), "A Holly Jolly Christmas" (recorded by the Quinto Sisters and later by Burl Ives), "Silver and Gold" (for Burl Ives), "I Heard the Bells on Christmas Day" (introduced by Bing Crosby), and "Run Rudolph Run" (recorded by Chuck Berry).