[Page from unidentified book, featuring photo of Lieutenant Joseph Wehner and Major Harold E. Hartney, undated]

Page from an unidentified book, featuring a photo of Lieutenant Joseph Wehner and Major Harold E. Hartney of the 27th Aero Squadron and 1st Pursuit Group, undated.

Typed caption: "Lieutenant Joseph Wehner (left) and Major Harold E. Hartney (right), Commander of the Twenty-seventh Aero Squadron and later of the First Pursuit Group."

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