1. A Prefatory Essay on the Perception of Surfaces vs. The Perception of Markings on a surface. 2. Foreword to The Perception of Pictures (with correspondence), 1979

1. A Prefatory Essay on the Perception of Surfaces vs. The Perception of Markings on a surface. 2. Foreword to The Perception of Pictures (with correspondence), 1979, Box: 9, Folder: 66. James J. Gibson papers, 14-23-1832. Division of Rare and Manuscript Collections. https://archives.library.cornell.edu/repositories/2/archival_objects/820130 Accessed January 20, 2026.