This catalogue presents extracts from a unique archive of images of helicopters. The collection consists in six lever arch files containing over a thousand photographs of helicopters produced between the 1950s and the mid-1980s. The editorial work done in this catalogue to reproduce and release part of that group of images brings about the possibility of obtaining more information about its origins and context of production. The selection intentionally focuses on the unknown nature of the original author and collector of this photographic archive.