James L. Murphy, "A Radiocarbon Date from the Reeve Site, Lake County, Ohio," Ohio Archaeologist 24 no. 1 (Winter, 1974): 6-7.
A radiocarbon date of 580 B.P. ± 130 years. or A. D. 1370 (Sample No. CWRU-71 ) on charcoal from the Reeve Site (Whittlesey Focus), Lake Co., Ohio, accords well with previous estimates of A.D. 1300-1400 for Reeve Horizontal ceramics (Murphy 1971:298).