B&W Hydrographic Chart. Greece - East Coast. Port of Volo (Greek Volos). Surveyed by Commander L.S. Dawson, assisted by Lieutenants G.C. Frederick and P.N. Richards, H.M.S. Sylvia 1887. London, Published at the Admiralty 1st October 1888, under the Superintendence of Captain W.J.L. Wharton, Royal Navy, F.R.S. Hydrographer.