There are 6 Williams Helicopter UH-1H aircraft on the U.S. registry that TailWiki has a page for. Every one is built from the public FAA record — year, serial, engine, home base, and registration history — and owners and pilots add photos, trips, and stories on top. The ones listed here were built between 1965 and 1967.
N458CC
1967 Williams Helicopter Corp UH-1H
Baker City, OR
N247PV
1965 Williams Helicopter Corp UH-1H
Arbuckle, CA
N40729
Williams Helicopter Corp UH-1H
Wilmington, DE
N710WD
Williams Helicopter Corp UH-1H
Richvale, CA
N902HE
Williams Helicopter Corp UH-1H
Orono, ME
N918TG
Williams Helicopter Corp UH-1H
Higley, AZ