United States. Bureau of Crop Estimates
Corn, yields per acre and prices, by states, 50 years, 1866-1915
Field agent's handbook of agricultural statistics
Meeting of the field agents, crop specialists and administrative officials of the Bureau of crop estimates at the National museum, Washington D.C., January 22-27, 1917
Memorandum regarding Bureau of Crop Estimates
Statistical data
Study of state laws relating to collecting, through assessors, of crop acreages, etc
Wheat, yields per acre and prices, by states, 50 years, 1866-1915
Corn yields per acre and prices, by states
The agricultural outlook