Selaus tekijän mukaan kokoelmassa Aarno Piltzin karttakokoelma
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Baltic. Gulf of Finland. Sheet VII, Hogland to St. Petersburg / Hydrographic Office.
Walker, John (kaivertaja.); Walker, Charles (kaivertaja.) ([London] : Hydrographic Office of the Admiralty :sold by J. D. Potter, 1853.Iso-Britannia. Admiralty., 1853) -
Russia in Europe / engraved by J. & C. Walker.
Walker, John (kaivertaja.); Walker, Charles (kaivertaja.) (London : Society for promoting christian knowledge, [185-?]., 1850) -
The northern provinces of Sweden and Norway with part I, of Russia / published under the superintendence of the Society for the Diffusion of Useful Knowledge.
Walker, John (kaivertaja.); Walker, Charles (kaivertaja.) ([London] : Baldwin & Cradock, 1834.Society for the Diffusion of Useful Knowledge., 1834)