"Spring Tornado," "Certainty," "Model," and "Self-Projection," New Letters, no. 2, vol. 39 (Winter 1972) pp. 75-76.

"Spring Tornado," "Certainty," "Model," and "Self-Projection," New Letters, no. 2, vol. 39 (Winter 1972) pp. 75-76., Box: 104. Archie Ammons papers, 14-12-2665. Division of Rare and Manuscript Collections. https://aspace3-test.library.cornell.edu/repositories/2/archival_objects/190238 Accessed May 19, 2025.