Photo probably by Grandpa Bob.
[This would be the summer before their 55th wedding anniversary, aged 75 and 76 respectively.]
To the footbridge
earthquake at 1:24 (approx.) Man on radio wondered if it might have been Skylab (!) [I think I knew that was an absurd notion]
Cousins Dinah and Jeanette with Grandma Susie. Camping, probably around 1972.