I could look at it if you'd like--not saying I'd know, but I used to own a 16mm projector and curate a series. Maybe I could figure something out.

Ebay is probably the best, or small libraries deaccessioning.

I found this on Google: http://www.detroitfilm.org/index.html
...maybe they'd have a lead for you on various 16mm questions?

Lastly, if you want, I can bring you some of my old films next time I drive back to my hometown. You can have it. The friend I gave my collection to never finished picking it up. I wanted to bring it with me to Detroit, but moving those films was as arduous as moving everything else I own put together.

Yay 16s, and yay for you for picking up this vanishing technology!