There are 7 Callair A-2 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 1946 and 1956.
N2921V
1956 Callair A-2
Queen City, MO
N2916V
1951 Callair A-2
Siloam Springs, AR
N2914V
1950 Callair A-2
Honey Grove, TX
N2907V
1949 Callair A-2
Port Townsend, WA
N33350
1946 Callair A-2
Fairbanks, AK
N2915V
Callair A-2
Casper, WY
N2918V
Callair A-2
Billings, MT