Courtesy of Nathan Masters, I found these fascinating vintage images which the USC Digital Libraries recently added to their Dick Whittington Photography Collection.
They show a family or friends (Dufay?) on what seems to be a Sunday type of outing, in the mid 1930s, up to Griffith Observatory, which had opened on May 14, 1935.
In the midst of the Great Depression, or perhaps because of it, people took care to dress up in dignity and elegance.