Half a Century of Cropland ChangeFootnote^*

* I am grateful to Bill Ackerman, Dale Kasler, Kathy Klink, Judy Martin, Phil Raup, the late Julian Simon, Paul Starrs, and Susy Ziegler for ideas, suggestions, and encouragement; to Reed Munson, for his talent for downloading data from the Internet; to Mark Lindberg, for his customary cartographic wizardry; and to Jodi Larson and Erin Arnold, for their word‐processing prowess.

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