Salvador Dali. "The Source" Purgatory Chant 21. Original Color Woodcut on B.F.K. Rives Paper. Block Engraved Signature. Sheet Size 10 1/4 x 13 inches. 1960. Reference: Michler/Lopsinger 1093. This original woodcut can be referenced in both the Albert Field guide (pages 189 - 202) and in Michler/Lopsinger (pages 102 - 114). Both of these references are the standard reference guides for original prints by Salvador Dali. We can send scans of the reference information for anyone who would like to see it (You WILL receive reference copies from BOTH reference catalogs with your purchase). Framed dimensions Approximately 16 7/8 x 20 inches. This woodcut is accompanied by a certificate of authenticity and is guaranteed as described.