The Red Thumb Mark. R. Austin Freeman. Haycraft-Queen Cornerstone. London: Collingwood Bros., [1907]
![The Red Thumb Mark. R. Austin Freeman. Haycraft-Queen Cornerstone. London: Collingwood Bros., [1907]](https://64.media.tumblr.com/addef404ecd3ce5e98bec560eab631dc/tumblr_p3n40vKtnJ1rrnekqo1_1280.jpg "The Red Thumb Mark. R. Austin Freeman. Haycraft-Queen Cornerstone. London: Collingwood Bros., [1907]")
The Red Thumb Mark. R. Austin Freeman. Haycraft-Queen Cornerstone. London: Collingwood Bros., [1907]. First edition. Original black cloth lettered in white with red thumb print (the author’s own) on front cover.A large proportion of the Dr Thorndyke stories involve genuine, but often quite arcane, points of scientific knowledge, from areas such as tropical medicine, metallurgy and toxicology. -- source link
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