Booth/St. Helens 1904 facial comparison

[Steve]

M.J.,
I would recommend you contact the Surratt House Museum in Clinton, Maryland as well as the institutions you mentioned. Their library has a lot of research material related to looking into the "Booth escaped" theory in their James O. Hall Research Center which might include stuff that isn't included in the other institutions:

https://www.surrattmuseum.org/

Unfortunately, the museum has been closed during the pandemic and I suspect the Research Center employees aren't available to make copies (for a charge per page) of documents like they had been before the pandemic.

I hope some of this useful.