There are 18 Cessna 401B 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 1969 and 1972.
N401WM
1972 Cessna 401B
Manheim, PA
N45KP
1971 Cessna 401B
Big Cabin, OK
N7983Q
1971 Cessna 401B
Naples, FL
N7988Q
1971 Cessna 401B
Monroe Township, NJ
N7989Q
1971 Cessna 401B
Goodyear, AZ
N401AZ
1969 Cessna 401B
Wilmington, DE
N401HH
1969 Cessna 401B
Salters, SC
N71ME
1969 Cessna 401B
Gilbert, AZ
N7901Q
1969 Cessna 401B
Mount Sterling, KY
N7912Q
1969 Cessna 401B
Overgaard, AZ
N7913Q
1969 Cessna 401B
Eureka, MT
N122AT
Cessna 401B
Safety Harbor, FL
N175KB
Cessna 401B
North Salt Lake, UT
N401LM
Cessna 401B
El Monte, CA
N41GD
Cessna 401B
Casper, WY
N517HC
Cessna 401B
Carson City, NV
N7925Q
Cessna 401B
Memphis, TN
N7969Q
Cessna 401B
Greeneville, TN