|Title:||Yearbook of the National Association of Secondary School Principals|
|Online content:||Free online material via The Online Books Page|
|Rights:||All content public domain in the US|
|Succeeded by:||Bulletin of the National Association of Secondary-School Principals (1926-1928)|
|Page responsibility:||John Mark Ockerbloom (ockerblo (at) pobox (dot) upenn (dot) edu)|
|Acknowledgement:||Thanks to Eli Baum for copyright research on this title.|
|Last updated:||February 21, 2022|
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