ATM Lenses for finders?

[Bruce Swayze <swayze@europa.com>]

I want to make a homemade visual finder.

Has anyone else been as frustrated as I am trying to find lenses to make a
homemade finder?  

I'm looking for something in the 60mm to 80mm size, with a focal length
appropriately short for a low power finder.  An achromatic doublet would be
perfect.  I've tried the Surplus Shack, but are there any other places to
buy lenses?  Preferably used or salvage, or low cost.  But new ones would be
okay if they aren't too expensive.  The whole idea here is to save some money.

Another alternative would be to find broken or damaged binoculars, to
salvage the lenses.  Is there a source for these anywhere?

Any help would be greatly appreciated.

Bruce Swayze
swayze@europa.com