|Title||Letter, 'Of the proportions of steam engine cylinders, A thesis sent on election as FRS [Fellow of the Royal Society]' from Francis Blake to the Royal Society|
|Date||23 May 1751|
Published in Philosophical Transactions, as 'The best proportions for steam-engine cylinders, of a given content, consider'd'
Read 23 May 1751
|Physical description||Ink on paper|
|Related material||DOI: 10.1098/rstl.1751.0030|