The Monitors

The Monitors were an American vocal group who recorded for Motown Records in the 1960s. The group, which consisted of lead singer Richard Street, Sandra Fagin, John "Maurice" Fagin, and Warren Harris, had two minor hits, "Say You", and then a cover of the Valadiers' "Greetings (This is Uncle Sam)", which reached number 21 on the Billboard R&B chart, and number 100 on the Billboard Pop Singles chart.

source: Wikipedia