Part of the Frick Collection Archives Repository
#5, M.D. Poppelmann - Palace Elevation, Box: 56, Folder: 8. Richard P. Wunder Research Files, MS.002. Frick Collection Archives.
#5, M.D. Poppelmann - Palace Elevation, Box: 56, Folder: 8. Richard P. Wunder Research Files, MS.002. Frick Collection Archives. https://archives.frick.org/repositories/3/archival_objects/15882 Accessed August 12, 2025.
