1895-1980 This collection includes the following: Felix L. Dames, 1895 (No. 30. Bibliotheken Oberbergraths v. Dücker und des Bezirksgeologen Halfar / Felix L. Dames, 1899 (No. 30. Bibliotheca Mariano de la Paz Graells III. Arachnida, Myriapoda, Crustacea) / Max Weg, 1925 (No. 183. Sonderangebot von Zeitschriften, Büchern und Sonderdrucken über Ornithologie) / Max Weg, 1932 (No 211. Hydrobiologie, hierin bibliothek Prof. Dr. C. Brandt. Teil I) / W. Junk, 1930 (No. 77. Periodica et Opera selecta) / W. Junk, 1932 (No. 80. Scientia naturalis) / W. Junk, 1932 (No. 81. Rarissima) / W. Junk, 1934 (No. 85. Periodica, Iconographiae, Rara et Curiosa) / W. Junk, n.d. (No. 95. Evertebrata) / Sotheby, 1967 (Catalogue of valuable printed books, science, autograph letters and historical documents) / Christies, 1969 (Printed Books. Natural History, Travel and Atlases and a few Manuscripts - with results list) / Christies, 1969 (Printed Books and Manuscripts - with results list) / Francis Edwards Limited, 1980 (No. 1032. Natural History).These come from the Wheldon & Wesley natural history booksellers firm. All have been used, thus with wear, some have annotations made by Wheldon & Wesley. Catalogues like these are extremely ephemeral, and have a low survival rate as most copies were thrown away after use.