According to Jim Stone, that Baltimore Gazette website is a hoax:
“A quick check of the Library of Congress shows that the Baltimore Gazette opened it’s doors in 1865, operated 10 years, closed it’s doors in 1875 and has not existed for 140 years. This confirms that the web site called the Baltimore Gazette is nothing but a well crafted hoax.
It got me at first, I thought it was real. I thought there was no way it could possibly be fake. It has EVERYTHING you would expect a legitimate newspaper to have. It definitely cost money to do. Yet it is completely and totally fake.”