Harold was the Eagles' 7th-round pick in 1971. Yes, SEVENTH! The Birds wasted their first 6 picks on DE Richard Harris, G Henry Allison, K Happy Feller (who drafts a kicker that high?) and 3 other guys who didn't even play, before selecting Carmichael. It's no wonder the team sucked so bad in the early-1970s.
Carmichael played for the Eagles for 13 years, and was a starting wide receiver in all but his first 2 seasons. He started 6 games as a rookie, but it was as a tight end, filling in for the injured Gary Ballman. He also started 2 games in 1972.
Why all the time on the bench? The Birds already had Harold Jackson and Ben Hawkins as wideouts. Jackson led the NFL in receiving yards in his first (1969) and last (1972) seasons with the Eagles. He also led in receptions in '72.
After the 1972 season, Jackson was traded to the Rams for quarterback Roman Gabriel. Did they miss the league's top WR? No! Carmichael took Jackson's place, not only in the Eagles' lineup, but as the NFL's leader in catches and receiving yards!
Carmichael made the Pro Bowl 4 times (1973, 1978-80), and started all but one game from 1973 to 1981. He missed 7 games 1982, but returned for 15 games in '83, his final season in Philly.
He finished his career with 2 games for the Cowboys in 1984.