The two I've found since the last release of the FF CD-ROM are numbers 8 and 9, I've uploaded them to photobucket but they've been reduced considerably in size to fit into the allowed space:
Guesses at Futurity No. 8: A Dinner Party A.D. 2000. Menu of Chemical Foods
Guesses at Futurity No. 9: A Street in the City of the Future
I'm still unfortunately missing pictures 4-6 completely, and only have a poor reproduction of no. 7. All of these would be in volume 5 of the magazine, January-April 1895, so if anyone sees this on sale anywhere please let me know.