Sonora: The Mother Lode Press for The Tuolumne County Historical Society, 1961-65. Uniform format with unchanging masthead, very professional work on semi-coated paperstock staplebound to make 8p. self-wrap fascicles. A few have been folded transversely, all lie flat. 16 consecutive numbers, with odds v5n1 and v6n2 thrown in along with four duplicates.