Data Documentation for AJAE paper 2006 (pdf)
Acquaye, A.K.A., J.M. Alston, and P.G. Pardey. “Post-War Productivity Patterns in U.S. Agriculture: Influences of Aggregation Procedures in a State-Level Analysis.” American Journal of Agricultural Economics 85(1)(February 2003): 59-80.

Documentation for U.S. Agricultural Input, Output and Productivity Series (pdf)
U.S. Agricultural Input, Output, and Productivity Series, 1949-1991 (Version 3) This document is a continuing work in progress and this posting will be updated with future versions as they become available.

US State Production and Productivity Indexes (xls)
Microsoft Excel data file