Starting in 1932, Grauer covered the Olympic Games, presidential inaugurations and international events. During his radio career, Grauer covered nearly every major historic event, including the Morro Castle fire, the Paris Peace Conference and the US occupation of Japan. Millions remember his NBC coverage of the New Year's celebrations on both radio and TV. Between 1951 and 1969, Grauer covered these events 11 times live from New York's Times Square. He continued covering New Year's Eve for Guy Lombardo's New Year's Eve specials on CBS in the 1970s, with his last appearance on December 31, 1976, the year before both he and Lombardo died. From the mid-1950s until the mid-1960s, Grauer's reports were part of the NBC television network's "The Tonight Show", where he worked with Johnny Carson and prior to that, Jack Paar, and Steve Allen. Grauer was also one of NBC Radio's "Monitor" "Communicators" from 1955 to 1960.