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- Subject is exactly "Public address systems"
[William P. and Moya Olsen Lear Papers, Box 107, Folder 10; Box 201, Folder 1 - "Public address system for banquet halls (WPL/328-1)," 1974 April - May]
![[William P. and Moya Olsen Lear Papers, Box 107, Folder 10; Box 201, Folder 1 - "Public address system for banquet halls (WPL/328-1)," 1974 April - May]](https://digitalcollections.museumofflight.org/files/square_thumbnails/43eae945930b6cee7dd87f146202b47a.jpg "[William P. and Moya Olsen Lear Papers, Box 107, Folder 10; Box 201, Folder 1 - "Public address system for banquet halls (WPL/328-1)," 1974 April - May]")
Items from Box 107, Folder 10 and Box 201, Folder 1 of the William P. and Moya Olsen Lear Papers, April to May 1974. Contains correspondence regarding disclosure, sketches, hand-drawn illustrations, and notes related to a LearAvia public address…