The following information is from Yesterland.com
America on Parade ran from June 14, 1975, through September 6, 1976. Doing double-duty as Disneyland's afternoon and evening parade, America on Parade displaced the Main Street Electrical Parade for two summers.
With 50 parade units, 150 character performers, and lasting over a half hour, America on Parade is a grand experience. The parade features the "People of America" -- eight-foot-tall characters with doll-like heads -- including Ben Franklin, Miss Liberty, Uncle Sam, Pilgrims, and giant snack-food vendors. Watch as these "People of America" perform to some of the America's most popular tunes, recorded from a traditional band organ, including Yankee Doodle, This Land Is Your Land, There's No Business Like Show Business, and God Bless America.
The parade floats are towering. Watch eight-foot-tall Betsy Ross, in her two-story-tall rocking chair, sewing the immense, first American flag. See giant snack food containers rolling down the parade route. Marvel at a turkey as tall as the buildings of Main Street.
The parade was shown at 3 and 9 pm at both WDW and DL.
The following slides were ones that were bought in the park.
To be continued...