Sheetlines articles available as PDF downloads:
Christopher Board, ‘Air photo mosaics’, Sheetlines 71 (2004)
John Davies, ‘Fingerprints all over it’, Sheetlines 71 (2004)
Chris Higley, ‘Oxbridge ramblings’, Sheetlines 88 (2010)
Richard Oliver, ‘The rivals: notes on some intermediate-scale commercial topographic map series…’, Sheetlines 47 (1996)
Richard Oliver, ‘The Cassini Old Series and Past and Present issues’, Sheetlines 78 (2007)
R C Wheeler, ‘The French 'Type 1922' series’, Sheetlines 75 (2006)
Gerry Zierler, ‘Not such a Scilly map’, Sheetlines 88 (2010)