I just spent several days in Yosemite National Park, and though I loved the iconic Valley monoliths of El Capitan and Half Dome, what moved me more than anything else were the trees. We went to 3 sequoia groves, including Mariposa, Tuolumne and Nelder, and in each grove, found forests of incomparable, and rare beauty. The trees of the Sierra Nevada Mountains are so diverse, encompassing unusual lower elevation trees like digger pines and oaks, and higher elevation red firs, which are seen in very few other places. I've resolved to do some paintings of many of these trees. Here I begin with some quick sketches of sequoias. It's impossible to show their marvelous size without something against which to measure them, but at least I managed to capture a little sense of their trunk texture and color.