Last weekend I took my sister to the annual Denver Chalk Art Festival in Larimer Square. We went on Saturday; as we discovered, most of the pictures are not finished until Sunday, so that’s when we should have gone. Here’s a sampling of what we saw. Unfortunately, I don’t have the artists’ names for any of them. The portrait of the woman in white was especially interesting: The picture itself was oddly elongated, but a piece of paper taped to the ground in front of it directed you to stand there and look through your camera lens. And voilà, the picture appeared in proper perspective. It’s funny to think of the thousands of photographs of this picture that now exist in Colorado. Other chalk artists set themselves the task of reproducing a painting; the photo of the American Indian with the buffalo robe shows a detail of one of these.