Help identying the artist on these 4 art deco inspired prints/paintings(?)

Hi everyone-I'm new to this forum but discovered you guys because I need some help learning more about these paintings! The first two are somewhat monochromatic and have metallic portions. One has what looks like a signature but I can't quite make it out, please see the images. They are distinctly art deco inspired and quite cool!

http://i836.photobucket.com/albums/zz289/MojoLovesLoubies/IMG_0455_zpsigspbbub.jpg

http://i836.photobucket.com/albums/zz289/MojoLovesLoubies/IMG_0458_zpsylcdrf9j.jpg

http://i836.photobucket.com/albums/zz289/MojoLovesLoubies/IMG_0456_zpsaidthvpi.jpg

http://i836.photobucket.com/albums/zz289/MojoLovesLoubies/IMG_0459_zpsdjqnftz9.jpg

http://i836.photobucket.com/albums/zz289/MojoLovesLoubies/IMG_0462_zps7amxzejk.jpg

The other two are more brightly colored and appear to have glitter appliques on the surface. These also have a signature, more distinctive, but again, too abstract for me to make it out...

http://i836.photobucket.com/albums/zz289/MojoLovesLoubies/IMG_0463_zpslo4cczhl.jpg

http://i836.photobucket.com/albums/zz289/MojoLovesLoubies/IMG_0464_zpspvvhyam0.jpg

http://i836.photobucket.com/albums/zz289/MojoLovesLoubies/IMG_0467_zpsievqnsoq.jpg

http://i836.photobucket.com/albums/zz289/MojoLovesLoubies/IMG_0468_zpsnc8248jk.jpg
If anyone could help me to determine who these might be by so I could learn more about them, that would be great! I found them in my aunt's apartment which she just purchased fully furnished and would love to learn more, still trying to decide whether to keep them and have them refinished as they need to be re-matted...would like to know if they are anything "special" particularly and thus worth the investment. Thanks!