1. J/8756.f.24(11) Reference (shelfmark): J/8756.f.24(11) Title: Cloud ascending from a valley to the summit of a mountain driven back by a contrary wind. Photographer: Guyton, Joseph Scope & Content: Genre: Scientific Photography Photographic copy of diagrammatic sketch, dated 1867. Collection Area: Printed Collections Languages: Not applicable Date Range: c 1868 Extent: 1 item