The feature image is the MyHeritage/colorized version, and below is the black and white standard:

The little girl in front, is Matt’s mother Penny DeVoe. Penny’s brother Larry DeVoe is on the left, his arms behind his back. The woman in sunglasses is Hilda (Rumbaugh) Chapman, mother of the tallest boy in back, Jerry Chapman. Jerry would later marry the only unpictured DeVoe child — perhaps Judy took the photo?
For dating, we have a license plate in view, 1955 — so I’ll place this around summer 1955 – Larry would be 12 years, Jerry 15-16 years, Hilda 39 years, Penny 3-4 years.
One might guess it to be a parking lot in the Lodi area, but there’s little in way of visual clues around to help clarify location or context/event.
Infobox

Questions
- What was going on here?