Grace's Guide To British Industrial History

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Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 167,704 pages of information and 247,104 images on early companies, their products and the people who designed and built them.

Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 147,919 pages of information and 233,587 images on early companies, their products and the people who designed and built them.

Roland Sydney Portham

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Revision as of 13:19, 3 November 2014 by MaryS (talk | contribs) (Created page with "Engineer of 22, Billiter street, London, E.C. <ref>The Engineer 1919/01/24</ref> 1917 Patented Evaporative Condensers. <ref>The Engineer 1919/01/24</ref> == See Also == <wh...")
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Engineer of 22, Billiter street, London, E.C. [1]

1917 Patented Evaporative Condensers. [2]

See Also

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Sources of Information

  1. ↑ The Engineer 1919/01/24
  2. ↑ The Engineer 1919/01/24
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