Allen--I saw your photos regarding this thread over at L.H. and am posting the link here since you mentioned you'd be posting the photos here eventually. This may help you to get some more info from our members.
http://www.audioheritage.org/vbullet...What-are-these Your H.F. drivers look very similar to Altec 802-8G drivers and the cabinets look to be home-made, but there are most likely other members here who can be more specific/add to these observations.

By the way, I have used the Solen caps (that you mentioned) in my Model 19's and Model 14's and have found them to have excellent sonic characteristics. However, everyone has their own preferences in caps and I have seen threads regarding capacitor preferences generate almost as "spirited" of a debate as threads regarding wire/cables. Best of luck with your project....