OSU Special Collections & Archives: Lane County crops, 1922
OSU Special Collections & Archives: Hop Culture, by Meeker. First printed in 1883.
OSU Special Collections & Archives: Hop production in Germany was a wild affair.
OSU Special Collections & Archives: Hop drier, new form, 1950.
OSU Special Collections & Archives: 1899 Hop Harvest Record
OSU Special Collections & Archives: "The Bitter End of Hops," 1967 article in the Eugene Register Guard.