James "Danno" MacArthur left after the '78-'79 season. His character nickname was an "in-joke" nod to (then) long-time CBS West Coast programming executive Mike Dann.
A sleeve combining the elongated front photo showing the street drain WITH "Her Majesty" included on the back, is the rare American second pressing (from approx. November 1969 - January 1970).
The series ran on NBC from 1978-1985; with the final season being on ABC. Also, the role of "Maggie" was taken over from Dixie Carter by Mary Ann Mobley when the series changed networks (as Carter had been cast in the equally successful "Designing Women" sitcom at that point).