From 8-year old Hilda’s diary:

Today instead of going to school, we went to a museum with Miss Cashen. The museum is in Golden Gate Park. Everything outside it was very beautiful. Everything inside was just old.

Hilda must have gone to the New Memorial Museum which ultimately became the de Young. Like Hilda, I went there on school field trips, but by then it was a different building. After damage from the 1989 earthquake, the current museum structure was built.