I wasn't able to get a history photo posted last week, so here are two for this week.
They were taken from the catwalk on the inside of the dome for the 200-inch telescope, which wasn't much of a dome yet, on August 26, 1937.
The crane at right in each shot was used to lift the elements of the dome's structure into place.
There is at least one person in each photo. Can you spot them?