Nashbar used to sell a chromed 1" threaded mtb fork many moons ago. Bought one to repair a bike. Try searching under Spinner, Tange, Kinesis. These 3 companies supply OEM forks. You might get lucky.
If you mount a 700C hybrid fork, verify tire clearance. If it's good, you'll have a "69er". 26" rear, '29'-inch front mtb.