Under the “better late than never” category, a previously-unavailable reference work is on the Internet, courtesy of the Obama Conspiracy Theories blog.
I was unable to find a copy of A. P. Hinman’s smear book on President Chester A. Arthur on the Internet, so I undertook to obtain a copy through interlibrary loan. I’ve scanned the 1884 work titled How a British Subject became President of the United States and put a searchable PDF online here at ObamaConspiracies.org. The file is around 3.5 Mb in size. I have a higher-quality version (25 mb) available upon request.
Hinman argues that Chester A. Arthur was born in Canada, and so not a natural born citizen. Historians reject Hinman’s thesis, but the discussion over Arthur’s date and place of birth is part of Leo Denofrio’s attempt to discredit Arthur’s precedent as a President of the United States who had a non-citizen father.
See also our main article here, The Mysterious Mr. Hinman.