Here's one of those shots that you
could look at quick and say it's a 707, but it isn't -- this is a 720,
regardless of Amercian's calling all their four-engine Boeings "707s."
This one (N7545A) is shown during a brief time
of quiet on a gloomy summer afternoon. It was
operating AA's daily DAL-BWI-PHL-BWI-DAL turnaround.
Philadelphia, July, 1965