Dredge safety hook, water bottle, dredge weight, and tangles, Chester rake
dredge. In: "Report on the Construction and Work in 1880 of United States Fish
Commission Steamer FISH-HAWK", by Lieutenant Zera Luther Tanner, U. S. N.
United States Commission of Fish and Fisheries.
Part IX. Report of the Commissioner for 1881. Plate X, p. 53.