Image: Joseph Dunninger slate writing
Joseph_Dunninger_slate_writing.png (739 × 437 pixels, file size: 542 KB, MIME type: image/png)
Description: Magician Joseph Dunninger demonstrating a fraudulent slate writing method.
Title: Joseph Dunninger slate writing
Credit: Spiritualism A Psychic Investigator Exposes Mediums Frauds. Life (June, 1941).
Author: Joseph Dunninger
Usage Terms: Public domain
License: Public domain
Attribution Required?: No
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