Sorry for the delayed update to this thread.
I added a few more unknown serial killings to the map, including two "Jack the Ripper"s one from Atlanta and the other from New York who were active in the 1910's, both were much different in their choice of victims.
The "Atlanta Ripper" case is very interesting and shares many similarities to both the original Jack the Ripper crimes (mutilation of sexual organs and no apparent sexual assault) and to a string of over 40 axe murders of mulatto women that occurred during the same time period (the 20 victims of the Atlanta killer were all mulatto, also both cases went unsolved). It is safe to assume that this was not the work of the original ripper who, for some reason, moved to Atlanta, since the time frame would be extreme and the only witness report described a well dressed black man. However, the string of axe murders is interesting to consider with the similarities in victim type and the close (perhaps overlapping) time frame between the two murders. I will add an entry on the Axe Murders once I get to it's place in the book and I will try to search the internet for other information. There was also the New Orleans Axeman who was also active earlier in the century, although most of his victims were white couples.
I am trying to be more descriptive without taking too much from the book. I hope my new entries shed a little more light on each case more thoroughly.
To the question about editing the map: As far as I am aware the map in set to "public" access, so there shouldn't be any trouble adding your own entries. I'll double check to make sure it is open to the public, but I am almost positive it has been set to allow anyone to edit it.
Edited by H.H. Holmes, 13 November 2012 - 11:36 PM.