Thanks a bunch for all the good input. 1)The hardware links upthread are great, although I haven't located anything from them that fits the bill. 2) Jumpilotmdm & millworkman: You're right. Doors are 1-3/4" thick. Typo corrected. Btw: Doorknob setback is 2-1/2" - 2-5/8". (I took off a touch too much wood on the door edge to get the doors to fit 3) circuspeanut: 'There are locking slide bolts you could install on the desired side, but they appear to be intended for non-wooden patio doors and are rather hideous - maybe with some luck you can scare up a nicer version?' It's concept that had occurred to me (even though the doors already have two slide bolts on them), but I looked around and couldn't find a locking one. And your right regarding hideousness ... might as well put a hasp and padlock on the door, which I am unfortunately very close to doing as my time is running out and I need a solution. 4) sacto_diane: A rabbeted mortice looks promising, though it seems it would be perhaps a federal case to get locate one that would fit? Also, I'd prefer if at all possible, a modern key vs. skeleton key, but if I could locate a correct rabbeted mortice I'd likely call it a day.

I like solid wood doors. Anything else is just junk in my opinion, even though the fake ones are much more expensive. A wood door looks like wood, feels better, sounds better, and looks better. Yes, they are more difficult to maintain, do not seal as well, etc. But when you look at an old home and see a fake door on it, does not cut it to me. I removed a Therma Tru door several years ago and replaced with a solid wood door and have been very happy. It now has character. The Therma Tru door was too cheesy for me.

Thanks for the replies! Been busy at work and just getting an opportunity to check back in- the truth is that the doors function just fine, but are dated. It's truly just an aesthetic thing for me, which is why I hesitate to spend $3k+ on new. I'll attempt to post a pick, but imagine I'll fail on that!

Start with a glass shop. New hardware might require filling in old screw holes. The door can be painted but preparation for repainting is paramount. i suggest you trace the outline, make several photocopies, and add different hardware shapes and color to help visualize.