AAPG "Constraints on the Timing of Early Tertiary Incaic Tectonism and associated volcanic Activity, Andes of Central Peru", By Noble, McKee and Megard, November 1978

AAPG "Constraints on the Timing of Early Tertiary Incaic Tectonism and associated volcanic Activity, Andes of Central Peru", By Noble, McKee and Megard, November 1978, Box: 55, Folder: 13. Hollis Hedberg papers, RH MS 546. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/150625 Accessed December 24, 2025.