Very good two -volume set bound in navy buckram. A few pages professionally repaired. London: Bernard Quaritich. Volume I: 1916, 528 pp. Volume II: 1921, 615 pp. Twenty color plates and text figures by H. GRONVOLD. B&W photographs, large folding map. Copy No.151 of an edition of 250 copies. Based on expeditions to Mt. Roraima in 1894 and 1898, a scarce and important work on South American birds.