Over 400 original photographs, including one of Brown's bookplates located in volume one. The first volume is divided into three sections. The first section titled, First Voyage to Peru, 1910, largely contains pictures of Peruvian landscapes showing Brown's interest in geology. This section includes pictures of oil drilling operations and other photographs of ports in South America. The second section is titled, Expedition from Piura to Loja, 1911, and contains landscape pictures taken on this mule and donkey exhibition. The third section includes family and geological photographs. Photographs in this volume have printed ink captions, which identify the subjects. The second volume contains identified photographs, including Brown and fellow English soldiers in Germany (1918) during World War I, Peruvian landscapes and boats, and miscellaneous oil drilling photographs.