The Shattered Heart adventure path from AAW Games is now complete with issues #3 and #4 just releasing.
http://store.steampowered.com/app/456890/
http://store.steampowered.com/app/456891/
And here is the Call of Cthulhu module for Secrets of New Orleans. It contains a reference module for running your Call of Cthulhu campaigns in New Orleans during the 1920's and a short adventure set in the area. New Orleans is very rich culturally with lots of great adventure hooks featuring voodoo and clandestine cults.
http://store.steampowered.com/app/457470/
Don't forget that you will also need the Call of Cthulhu ruleset in order to run this product.
http://store.steampowered.com/app/299290/