The letters of American master of horror H. P. Lovecraft to his friend Alfred Galpin tell of his youthful interests in chemistry and astronomy, his extensive involvement in amateur journalism, and his later conversion to moderate socialism. Also included are the surviving letters to the Gallomo, a round-robin correspondence cycle including Galpin, Lovecraft, and Maurice W. Moe. In these letters we find fascinating accounts of Lovecraft’s dreams, remarks on the inspirations for his early horror tales, and further details on amateur journalism controversies. Lengthy letters written jointly to Galpin and Frank Belknap Long relate his travels along the eastern seaboard. As an appendix, a substantial amount of Galpin’s own writings—including some unpublished documents—are included, shedding further light on the Lovecraft-Galpin relationship.