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ETHS Press Release on John Porter McCowan portrait

Identifier: MM.2022.001

Scope and Contents

Press release by the East Tennessee Historical Society on the results of sending the John Porter McCowan portrait to Oak Ridge National Laboratory's High Temperature Materials Laboratory for infrared study. The infrared camera revealed an underpainting of watermill landscape. The underpainting further supports suspicion the unsigned portrait was painted by Lloyd Branson.


  • Creation: 2006

Conditions Governing Use

Material is available for research. Prior arrangement MUST be made by contacting the Calvin M. McClung Historical Collection at


1 folder

Language of Materials



Includes CD-ROM with the scan of the painting as well as original files for the press release.

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Code for undetermined script

Repository Details

Part of the Calvin M. McClung Historical Collection Repository

601 S Gay Street
3rd floor
Knoxville Tennessee 37902 United States