Mark Soderstrom. Mark Allen Soderstrom is an artist living and working in Humboldt County California. Soderstrom owns and operates Southstream Art Services in Arcata. Soderstroms work compares and contrasts individual and societal perspectives. South Stream Art Services. Painting Sculpture poetry photography music interactive projects Painter Sculptor Poet Photographer musician. Found Poetry Tracing Gamut Pi Re(a)semblance Hang Gallery Gallery Dog Greystone Gallery Barbara Anderson Gallery San Francisco Arts Commission Gallery Mills College Art Museum Humboldt State University Arcata Eureka Oakland Turlock The Stone Shifter Magazine Ink People