The world's finest roses, irises, gladioli and peonies - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Brookwood Gardens, Inc, 1924)

Worth while glads - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Wales Road Gardens, 1926)

"Worth while" peonies, iris & gladiolus - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Wales Road Gardens, 1928)

Wyatt's garden book : seeds, plants, bulbs, garden supplies - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Job P. Wyatt and Sons, 1930)

Wyatt's garden book : seeds, plants, bulbs, garden supplies - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Job P. Wyatt and Sons, 1929)

Wyatt's garden guide - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Job P. Wyatt & Sons Co, 1930)

Wyatt's garden guide - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Job P. Wyatt & Sons Co, 1931)

Wylie's hardy perennials - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Wylie Nurseries, 1923)

Wylie's hardy perennials - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Wylie Nurseries, 1926)

Wyman's garden book, 1939 - Framingham Nurseries, Framingham, Mass. (Wyman's Framingham Nurseries, 1938)

Year book. Section II, No. 37, a complete catalog of evergreen shrubs, trees, vines, annuals, perennials, roses, peonies, iris, phlox, gladioli, dahlias & accessories - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Little Tree Farms, 1927)

Year book 1937 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (State Nursery & Seed Co, 1937)

Year book for 1934 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (State Nursery & Seed Co, 1934)

Year book for 1935 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (State Nursery & Seed Co, 1935)

Year book for 1936 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (State Nursery & Seed Co, 1936)

The year book for 1937 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Weston Nurseries, 1937)

The year book for 1938 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Weston Nurseries, 1938)

Yopp's eighteenth annual seed catalogue and garden guide : 1928 - G.E. Conkey Company. (Yopp Seed Company, 1928)

Yopp's nineteenth annual seed catalogue and garden guide, 1929 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Yopp Seed Company, 1929)

Yopp's twentieth annual seed catalogue and garden guide, 1930 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Yopp Seed Company, 1930)

Yopp's twenty-first annual seed catalog : nineteen thirty-one - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Yopp Seed Company, Incorporated, 1931)

Yopp's twenty-fourth annual seed catalog and garden guide, 1934 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Yopp Seed Company, Incorporated, 1934)

Yopp's twenty-second annual seed catalog, 1932 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Yopp Seed Company, Incorporated, 1932)

Your garden [catalog] - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Paramus Nursery, Inc, 1928)

Your home ... your garden [catalog] - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Westminster Nursery, 1930)

Your home ... your garden [catalog] - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Westminster Nursery, 1931)

Zeitschrift für fleisch- und milchhygiene (1901)

Zilke's 1941 bargain book : plants, trees, shrubs, bulbs, seeds - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Zilke Bros. Nursery, 1941)

Der Zoologische Garten - International Union of Directors of Zoological Gardens (G. Fischer, Zoologische gesellschaft, 1921)

Zoologische Jahrbücher. Abteilung für Systematik, Geographie und Biologie der Tiere (G. Fischer, 1908)