Snyder, Janet G. 1988. "Appendix 10: Study of the Paper of Selected Paintings from the Vever Collection." In An Annotated and Illustrated Checklist of the Vever Collection. Lowry, Glenn D. and Beach, Milo C., editors. 433–440. Washington, D.C.: Arthur M. Sackler Gallery. (https://doi.org/10.5479/sil.870462.39088016775744)