There are 27 Waco ATO 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 1928 and 1930.
N11211
1930 Waco ATO
Washburn, WI
N659N
1930 Waco ATO
Concord Township, OH
N663N
1930 Waco ATO
Madison, WI
N13918
1929 Waco ATO
Troy, OH
N719E
1929 Waco ATO
Fort Worth, TX
N751E
1929 Waco ATO
Oklahoma City, OK
N767E
1929 Waco ATO
Fairfield, OH
N767K
1929 Waco ATO
Warrensburg, MO
N8565
1929 Waco ATO
Lascassas, TN
N906H
1929 Waco ATO
Ellsinore, MO
N9553
1929 Waco ATO
Lakeville, OH
N5533
1928 Waco ATO
Ellsinore, MO
N5814
1928 Waco ATO
Oshkosh, WI
N6714
1928 Waco ATO
Hood River, OR
N6930
1928 Waco ATO
Poplar Grove, IL
N1023S
Waco ATO
Kalispell, MT
N13917
Waco ATO
Valparaiso, IN
N1933R
Waco ATO
Zanesville, OH
N5673
Waco ATO
Ellerbe, NC
N736E
Waco ATO
Sonoma, CA
N741EA
Waco ATO
Ellsinore, MO
N749E
Waco ATO
Wallkill, NY
N8569
Waco ATO
Sequim, WA
N8573
Waco ATO
Paso Robles, CA
N915H
Waco ATO
Burlington, ND
N925F
Waco ATO
Sioux Falls, SD
N926H
Waco ATO
Springville, NY