Sherrie York is a Colorado artist who works primarily in the medium of reduction linocut.
This is a relief printing method in which the run of a given print is done in stages of impressions from the same block —as the block is re-cut and reduced in printing surface to be printed in a different color with each successive pass.
On her website, York has galleries of her linocut prints, as well as woodcuts, painting and drawings.
She also has a page describing the process, and often goes into more detail on her blog, Brush and Baren.
[Via Making a Mark]