Uphill Both Ways
Volume 9 - Boston 1956
The types of stock and steel that would be necessary to fabricate the frameworks The location and method of mounting the frameworks on the walls
I never saw a mock-up of the mount so doubt he made one. The diagrams would have served that function.
First step: Prepare the bones
The skeleton was doubtless incomplete. I never saw one that had all the bones when it was dug up although I’ve heard of them. This meant that dad and Arnie had to create the bones that were missing so that the skeleton would be complete when mounted. This was fairly straightforward. If they were missing a mirror- image bone, i.e. the left femur, they could reconstruct it by reversing all the traits of the right one that they had using plaster of Paris and whatever portions of the bones were available. If they were missing bones in a series, as in the spine, they could extrapolate from the vertebrae they had and make replacements for those missing. Arnie is adjusting a spine on a vertebrae. Note the bow tie.