Charcoal Painting titled No. 7. Can't figure out last name but initials are R.B. and monogram(located bottom right corner in painting) is shown below.

http://img291.imageshack.us/img291/9758/photo0184u.jpg

http://img251.imageshack.us/img251/7008/7c61e899dd5cad104e86208.png

Try Ricardo Baroja... There are some paintings on Artnet (three free to see) with what to my old eyes two have very similar monograms.

Ricardo Baroja (Spanish, 1871-1953)

http://www.artnet.com/artist/18820/ricardo-baroja.html

Ricardo baroja