On the mutual reaction of wings and body
This NACA-era technical report from 1927, issued by the NASA Technical Reports Server collection, examines how wings and fuselage bodies interact aerodynamically, aimed at aeronautical engineers. The pictures are plain line diagrams: a graph of induced velocity along the span axis, a lift coefficient plot comparing wing with and without body, flow streamlines around a circular body, and sketches of wing-body junction shapes. A designer could draw on their clean schematic style and the stark streamline and cross-section forms.
