21. Root development of vegetable crops Creator: Weaver, John E. 1884-1966. Collection: Core Historical Literature of Agriculture Publisher: McGraw-Hill Book Company, Inc., Publication Place: New York : Date: 1927 Format: Book
22. The principles of vegetable-gardening Creator: Bailey, L. H. 1858-1954. Collection: Core Historical Literature of Agriculture Publisher: Macmillan, Publication Place: New York : Date: 1921 Format: Book
23. Kaldárhöfði, near Sog, Grímsnes Collection: Icelandic and Faroese Photographs of Frederick W.W. Howell Location: Grímsneshreppur, Iceland Date: ca. 1900 Format: Image Creator: Howell, Frederick W. W.
