SI_Critchfield 9-4
Title
SI_Critchfield 9-4
Creator
Dr. Critchfield
Rights
Contributors retrain rights over their submissions and gave the Archive permission to publish it here.
Date Created
9/4/2011
Collection
Citation
Dr. Critchfield, “SI_Critchfield 9-4,” September 11 Digital Archive, accessed January 20, 2026, https://911digitalarchive.org/items/show/97416.