I won't do your research, but here is a site I've used in the past to answer questions like yours.
https://militarybruce.com/abandoned-...andoned-bases/
As for the artifacts, without a name and dates, you're going to have a hard time. In 1960, the war had only been over for 15 years. It was current memory for many people. As much as certain trophies are highly valued today, at the time, a lot of them were 'just old Nazi junk', with the attitude of 'we won that one you know'. It is entirely possible truck loads were sent off to Shilo, but things get traded and deaccessioned from collections continuously. The Germans coveted several pieces that the base had on display, and traded some of their more modern equipment to go on the pads when they left.