An advert from the July–August 1891 <i>The British Printer</i> for a linotype machine.
<i>The British Printer</i> (Linotype company limited)
July–August 1891
<p><i>The British Printer</i> July–August 1891 p122
</p>
<cite style="font-style:normal">Alderson, Brian (1987). "Mass markets: children's books". <i>The Cambridge History of the Book in Britain</i>: 382–415. <a href="https://en.wikipedia.org/wiki/Digital_object_identifier" class="extiw" title="w:Digital object identifier">DOI</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1017/CHOL9780521866248.012">10.1017/CHOL9780521866248.012</a>.</cite>