From approx. 1948, Myrna, Marcia, Irene and her parents (I think), Kenny and George in parade costume, etc.
Then about 1956-57, Walt, Marcia, Myrna, Lois, Kenny. Cut to the only picture I know of, of Grandpa Larson with a big grin on his face, followed by some more showing-off by George, with Ron, Marcia, and Ivan in the background. Never let it be said that I only embarrass others with these clips, and spare myself!
Coming next: some more identity questions. Sharpen your memories, cousins.