What Is This Shadow? Science Emerging from Darkness [promotional pamphlet for Kaskine Cathartic Pills]
New York: Kaskine Co., Ca. 1886. Pictorial wraps (5.75 x 4.75 inches), good copy with some wear and insect nibbling to rear cover, minor restoration along spine, 13 pp. of promotion for Kaskine. Worldcat locates NO copies in institutions.