Book excerpt: Providing a detailed annotated bibliography and research guide to the Stieglitz Circle and four of its leading members—Arthur Dove, Marsden Hartley, John Marin, and Max Weber—this new sourcebook offers a chapter on each of the four artists. Complete with biographical essay and guides to writings, statements, correspondence, books, articles, reviews, reference sources, and archival sources, each artist's chapter gives the researcher an exhaustive catalogue of relevant material. The only such annotated sourcebook currently available on the Stieglitz Circle, R. Scott Harnsberger's work offers lists of annotated reproductions of each artist's works, keyed to over 600 source volumes not mentioned elsewhere in the volume, including catalogues of museums, galleries, private collections, thematic exhibitions, and auction firms.