Here's grampa's office. The scene through the door in the rear was a photograph of the actual office through the window in that door.
I made the old-fashioned comptometer on the desk, which was a painstaking process. I took a batch of pins, and cut them at precisely stairstepped lengths to create the keyboard. Then hand-filed the round faces of each pin head so they were flat. Then I painted them. I also made the manual typewriter, which is hidden in the background. I carved the hat (hanging on the halltree) from a piece of pine wood.