This is a softcover edition of 'The Great International Paper Airplane Book' by authors Jerry Mander, George Dippel, and Howard Gossage. First published in 1967, this book documents the winners and entrants of the First International Paper Airplane Competition held by Scientific American. The front cover features a minimalist white background with bold black serif typography and monochrome illustrations of various paper aircraft designs, including a large delta-wing model with handwritten notations on its wing. The cover contains a promotional blurb at the bottom in a rectangular box, emphasizing its status as the 'official fly-them-yourself' guidebook. Physical condition reveals significant wear, including water staining or foxing at the bottom left-hand corner, visible creasing along the spine and corners, and slight yellowing of the paper stock consistent with its age. Some peeling along the spine edge and surface scuffing indicate frequent past handling. The material is a standard cardstock cover with internal paper pages likely containing diagrams, photographs, and technical data. As a vintage hobbyist manual, it represents a unique intersection of 1960s graphic design, aeronautics, and publication history sponsored by a major scientific journal.

I have examined the digital images of 'The Great International Paper Airplane Book' (1st Edition, 1967). This volume constitutes a significant artifact of mid-century hobbyist culture, documenting the First International Paper Airplane Competition hosted by Scientific American. From my visual inspection, the item is an authentic period softcover. However, the physical condition is graded as 'Fair' to 'Good.' I observed prominent water staining and foxing on the lower-left quadrant of the cover, significant spine creasing, and corner bumping. Such moisture damage typically implies internal issues like page rippling or potential mold, which significantly limits the value compared to a 'Fine' copy. Market demand for this title remains steady among aviation enthusiasts and collectors of 1960s graphic design. While first editions in pristine condition can fetch upwards of $100-$150, the visible wear and surface scuffing on this specimen place it in a lower tier. Comparables sold on secondary markets show that copies with similar moisture damage consistently settle in the $40 range, whereas better-preserved examples command a premium. Limitations: This appraisal is based solely on visual data and cannot confirm the structural integrity of the binding or the presence of all fold-out diagrams. A full authentication would require an in-person physical inspection to assess paper acidity levels and ensure no internal pages have been removed for use. I would also need to verify the presence of any signature or provenance documentation from the original competition entrants, which would vastly increase rarity and value. Without a tactile check for 'musty' odors or brittle pages, this valuation assumes the interior remains legible and intact.