Modifiche

Riferimenti: [http://burnham.wesonline.org.uk/Burnhamography_Starts.html], [https://web.archive.org/web/20120621213625/http://www.pengrauncher.co.uk/], [http://www.fountainpennetwork.com/forum/topic/19495-burnham-pens/] [https://web.archive.org/web/20100123211644/http://www.dreampens.co.uk/20493.html]

Riferimenti: [http://burnham.wesonline.org.uk/Burnhamography_Starts.html], [https://web.archive.org/web/20120621213625/http://www.pengrauncher.co.uk/], [http://www.fountainpennetwork.com/forum/topic/19495-burnham-pens/] [https://web.archive.org/web/20100123211644/http://www.dreampens.co.uk/20493.html], [https://forum.fountainpen.it/viewtopic.php?t=29319]