Browse Items (1 total)
- Source is exactly "The William P. and Moya Olsen Lear Papers (2000-06-20), Box 137, Folder 11"
[Drawing of helicopter heater]
![[Drawing of helicopter heater]](https://digitalcollections.museumofflight.org/files/square_thumbnails/e864a5c32845ef6dc1fd1aeaf07f70d4.jpg "[Drawing of helicopter heater]")
Drawing of a helicopter heater, sketched by William P. Lear, September 20, 1975. Includes several handwritten notes.