Wiener illustrirte Garten-Zeitung - Kaiserlich-Königliche Gartenbau-Gesellschaft in Wien. (W. Frick, 1891)

Wiener illustrirte Garten-Zeitung - Kaiserlich-Königliche Gartenbau-Gesellschaft in Wien. (W. Frick, 1897)

Wiener illustrirte Garten-Zeitung - Kaiserlich-Königliche Gartenbau-Gesellschaft in Wien. (W. Frick, 1897)

Wiener illustrirte Garten-Zeitung - Kaiserlich-Königliche Gartenbau-Gesellschaft in Wien. (W. Frick, 1901)

Wiener illustrirte Garten-Zeitung - Kaiserlich-Königliche Gartenbau-Gesellschaft in Wien. (W. Frick, 1901)

Wiener illustrirte Garten-Zeitung - Kaiserlich-Königliche Gartenbau-Gesellschaft in Wien. (W. Frick, 1901)

Wild flowers, perennials, rock plants - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Gunther Gardens, 1929)

[William Ewing Company materials] - Liberty Hyde Bailey Hortorium. Ethel Z. Bailey Horticultural Catalogue Collection. (1908)

[William Ewing Company materials] - Liberty Hyde Bailey Hortorium. Ethel Z. Bailey Horticultural Catalogue Collection. (1908)

[William Ewing Company materials] - Liberty Hyde Bailey Hortorium. Ethel Z. Bailey Horticultural Catalogue Collection. (1908)

Wm. Ewing & Co.'s seed catalogue - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Wm. Ewing & Co, 1901)

Wochenschrift des Vereines zur Beförderung des Gartenbaues in den Königlich Preussischen Staaten für Gärtnerei und Pflanzenkunde - Koch, Karl, 1809 -1879 (Wiegandt & Hempel [etc.], 1860)

Woolson & Co.'s catalogue of hardy perennial plants and price list : spring and fall of 1879 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Woolson & Co, 1879)

Woolson & Co.'s descriptive catalogue of hardy perennial plants and price list : spring and fall of 1880 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Woolson & Co, 1880)

Wrightia - University of Texas at Dallas. (University of Texas at Dallas, 1945)

Wrightia - University of Texas at Dallas. (University of Texas at Dallas, 1945)

W.W. Rawson & Co. seedsmen - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (W.W. Rawson & Co, 1904)

W.W. Rawson & Co. seedsmen - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (W.W. Rawson & Co, 1904)

W.W. Rawson & Co. seedsmen - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (W.W. Rawson & Co, 1905)

A year's gardening - Hargrave, Basil. (C. Scribner's sons, 1912)

A year's gardening - Hargrave, Basil. (T. Werner Laurie, 1912)

Zeitschrift für induktive Abstammungs- und Vererbungslehre (Springer-Verlag, 1908)