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Title: Telescopic hearing trumpet, plastic, by Eschmann Bros [Go to resource]
Description: Telescopic hearing trumpet, plastic, by Eschmann Bros. and Walsh, early 20th century License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Source: Science Museum Creator: Eschmann Bros. and Walsh (maker) Identifier: 1988-568 Go to resource More Like this...
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