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Title: Telegraphic block instrument, Webb & Thompson's Miniature Tr [Go to resource]
Description: Telegraphic block instrument, Webb & Thompson's Miniature Train Staff apparatus No. 2444, by the Railway Signal Co., Liverpool, no staffs, one maker's plate missing. License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Subjects: telegraphic block instrument Source: Science Museum Creator: Railway Signal Co. Identifier: 2001-7991 Go to resource More Like this...
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