Population Box 1, Folder 21 Bookmark Collection Context Yale University -Manuscripts and Archives William Nelson Parker papers, 1920-1992Additional Material, 1950-1989
Population and food, 19th and 20th century Europe Box 1, Folder 46 Bookmark Collection Context Yale University -Manuscripts and Archives William Nelson Parker papers, 1920-1992Additional Material, 1950-1989
Population and labor force Box 2, Folder 75 Bookmark Collection Context Yale University -Manuscripts and Archives William Nelson Parker papers, 1920-1992Additional Material, 1950-1989
"Pressures on Agriculture during Industrial Growth: The Examples of England and the United States," unpublished (1958). Session on comparative Economic History, held jointly by the Economic History Association and the American Historical Association in Washington, DC. Box 1, Folder 19 Bookmark Collection Context Yale University -Manuscripts and Archives William Nelson Parker papers, 1920-1992Additional Material, 1951-1992Writings
Price revolution of 16th and 17th centuries Box 1, Folder 19 Bookmark Collection Context Yale University -Manuscripts and Archives William Nelson Parker papers, 1920-1992Additional Material, 1950-1989
Primitive economics Box 1, Folder 7 Bookmark Collection Context Yale University -Manuscripts and Archives William Nelson Parker papers, 1920-1992Additional Material, 1950-1989
"Problemi e Prospective di Storia Americana: L'Agricola negli Stati Uniti del Nord," Ouademi Storici . Vol. XIV (1970). Box 1, Folder 51 Bookmark Collection Context Yale University -Manuscripts and Archives William Nelson Parker papers, 1920-1992Additional Material, 1951-1992Writings
"Productivity Growth in American Grain Farming," in Robert Fogel and Stanley Engerman, ed., The Reinterpretation of American Economic History, 1971 Box 1, Folder 54 Bookmark Collection Context Yale University -Manuscripts and Archives William Nelson Parker papers, 1920-1992Additional Material, 1951-1992Writings
"Productivity Growth in Grain Production in the United States: 1840-1860 and 1900-1910," in Output, Employment and Productivity in the United States after 1800: Studies in Income and Wealth . With Judith L. V. Klein, XXX. Vol. XXX, 1966 Box 1, Folder 39 Bookmark Collection Context Yale University -Manuscripts and Archives William Nelson Parker papers, 1920-1992Additional Material, 1951-1992Writings
"Productivity Measurement: History, Uses and Limits," unpublished (1987). Oral Report prepared for AEA meetings at Chicago. Box 1, Folder 114 Bookmark Collection Context Yale University -Manuscripts and Archives William Nelson Parker papers, 1920-1992Additional Material, 1951-1992Writings