L'ART TOME TRESIEME FROM 1800's ...HELP

I have many lithographs that came from a book from the 1800's called L'Art. I am very ignorant as far as the value of these, it is my understanding that this was a book/magazine in that period featuring all the different artist and that these were made every 3 or 5 years by hand and that there was no reproduction it has been quite difficult to find information on all of them (my sister and I have quite a few) which I assume may be a good thing, could you please can u take a look at the attached pictures and perhaps let me know who can help determine the value or whom may be able to help me? I am in Nashville TN USA but these were given to my mother who passed many years ago by a french lady in Venezuela, I have had these for a long time and would like to find someone who may be interested or has more info a as I am sure they will need to be cured etc..