- CollectionPamphlet 20 - History of Grinnell College and town
- Series20.1 - Poweshiek County and Iowa State History
- Box5 - Untitled
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- File20.1 pR23w - Reams, A. A. Washington township and its useful citizens from 1847 to 1901. Compiled in 1921 from the 1901 files of the Grinnell Herald.
- File20.1 pR24 - Development of Railway Transportation in Iowa and related material.
- File20.1 - Railroad Schedules
- File20.1 pR58 - Iowa River to River Road. History of the highway published in The Kellogg Enterprise.
- File20.1 pR585 - Chicago, Burlington & Quincy Railroad. Map. Copy of a lithograph printed in 1880. Shows the route through southern Iowa
- File20.1 pSa5g - Sanford, Nettie. Historic sketches of Grinnell and Poweshiek County. From Grinnell newspaper.
- File20.1 pSa5m - Sanford, Nettie. History of Malcom township, Poweshiek county; a trade history. Grinnell, Ray and Frisbie. 12 p.
- File20.1 pSc - Scenes from a 2006 calendar of Iowa small towns, 1914-1950.
- Item20.1 pSp71 - Sprague, G. Letter from Dr. Sprague: climate of northen Iowa, high winds, farm improvements, large farming, sorghum, health. 4 p. Article appearing in The Ohio Farmer.
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