Getty Images was quite detailed in the information provided with this photo:
Felix Millan #16 of the New York Mets throws to first base over the top of Bobby Mercer #7 of the Chicago Cubs during an Major League Baseball game circa 1977 at Shea Stadium in the Queens borough of New York City. Millan played for the Mets from 1973-77.
Glad we know that’s in the “Queens borough” of New York City instead of somewhere else in NYC! (And yes, I know “Murcer” was misspelled in Getty’s info.)
Anyway, yes, Felix Millan played for the Mets from 1973-77, the last stop of his 12-year career that began in 1966 in Atlanta.