North of England Institute of Mining and Mechanical Engineers in case you were wondering.
Over the years I've managed to piece together a nearly complete set of their transactions from Google Books and other sources.
But I'm missing the following numbers, has anyone got electronic copies of the following ?
11 (1861 - 62)
60 (1909 - 10)
61 (1910 - 11)
My last one is 69, not sure if there are any higher numbers than that ?