"The two Statistical Accounts of Scotland, covering the 1790s and the 1830s, are among the best contemporary reports of life during the agricultural and industrial revolutions in Europe" (click on either of the links below, and then click on 'Browse scanned pages' in the 'non-subscribers' box):
Account of 1791-99 vol.16 p.1 : Inveresk, County of Edinburgh
Inveresk, County of Edinburgh. Account of 1834-45, volume 1, page 246
Entry for Musselburgh in the Ordnance Gazetteer of Scotland: A Survey of Scottish Topography, Statistical, Biographical and Historical, edited by Francis H. Groome and originally published in parts by Thomas C. Jack, Grange Publishing Works, Edinburgh between 1882 and 1885.
Old Musselburgh Maps - links to the National Library of Scotland map collection:
Wikipedia entry for Musselburgh
"Welcome to Musselburgh", site with some local news, general and historical information, and contemporary and older images
Wikipedia entry for Musselburgh
"Musselburgh Community Profile" .....local information, statistics, organisations, contacts, etc, from East Lothian Library Service