You searched for: Institution University of Michigan. Libraries Remove constraint Institution: University of Michigan. Libraries Place At Allen Knob; Shallenberger SNP, 0.37 mi. S. of Grumley Rd., NW 1/4 sect. 15; Hocking Township. Remove constraint Place: At Allen Knob; Shallenberger SNP, 0.37 mi. S. of Grumley Rd., NW 1/4 sect. 15; Hocking Township.