Comparitive works by the artist might give you an example of the possible value of them. You also might want to try a public library with books on art and prices as well as take them to an art gallery to see what they think.
I don't know the size of yours. Nor, do I know the age of them.
I did find the following which are examples of that artist's work on the following site
2004 AUCTION ITEMS and the price that they went for at the time.
087 “Music for Your Eyes” by G.R. Boulanger
Framed original lithograph, 22” x 22”. Value: $375.
Donated by: Regency Fine Art
Minimum bid: $300
088 “The Good Years” by G.R. Boulanger
Framed original lithograph, 21” x 23”. Value: $375.
Donated by: Regency Fine Art
Minimum Bid: $300
089 “Calendar Suite” by G.R. Boulanger
Framed original lithograph, 22” x 22”. Value: $480.
Donated by: Regency Fine Art
Minimum Bid: $384
Linear Mode
