https://praxr.substack.com/
Letters from the Logbook | praxr | Substack
Tools for minimalist training. Notes on maximalist living. Click to read Letters from the Logbook, by praxr, a Substack publication. Launched a year ago.
letters fromthe logbooksubstack
https://www.dafhistory.af.mil/The-DAF-Legacy-Vault/DAF-History-Publications/igphoto/2003737823/
The Logbook of Signal Corps No. 1: The U.S. Army's First Airplane
This document is a detailed flight log and technical record maintained by Lieutenant Benjamin D. Foulois during the early testing and development of the U.S....
the logbooksignal corps
https://lotw.arrl.org/lotwuser/default
ARRL's Logbook of The World
of thearrllogbookworld