I have two pictures, both are little french girls making comments about toileting. One is # 1522 "Business is Business" Copyrighted 1931 by Camillia's The other # 1504 "How Practical" is copyrighted 1928 by Camilla Lucas . Both have the stylized letters S, Z, L in the lower righthand corner. I can't read the artists names, but one might be Reson (?). Any thoughts on what the prints are, history, value. If nothing else they are very cute and look great framed. They belonged to an aunt who died a year ago at the age of 90. Thanks for any help. Mentalmike.