Monobloc accumulator, Lancashire &amp; Yorkshire railway (Rankin Kennedy, Electrical Installations, Vol III, 1903).jpg
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Scan from <cite class="book" style="font-style:normal"><a href="https://en.wikipedia.org/wiki/Rankin_Kennedy" class="extiw" title="en:Rankin Kennedy"> Kennedy, Rankin</a> (1903 edition (five volumes) of pre-1903 four volume edition.)      <i> Electrical Installations</i>, vol. III, <a href="https://en.wikipedia.org/wiki/en:London" class="extiw" title="w:en:London"><span title="capital and largest city of the United Kingdom">London</span></a>:  Caxton  <small></small></cite>