Crossword Puzzle ''Disco Duck'' singer Rick

Clue: ''Disco Duck'' singer Rick

Disco Duck singer Rick (DEES with 4 letters)
39th V.P. (AGNEW with 5 letters)
"Disco Duck" singer Rick (DEES with 4 letters)
America's 39th President (CARTER with 6 letters)
39th of 50 (NORTHDAKOTA with 11 letters)
Do a scathing impersonation of the 39th president? (MINCECARTER with 11 letters)
39th president of the United States (JIMMYCARTER with 11 letters)
It equals 0.3937 inch (CENTIMETER with 10 letters)
Super Bowl to be played in the year 3968, at the current rate (MMII with 4 letters)
39th VP (AGNEW with 5 letters)