315. ↑ http://www.secretprojects.co.uk/forum/index.php/topic,14613.15.html?PHPSESSID=quqcq3bo53niebchb4tgfgr6r6 ↑ Lumsden 2003, p.217. ↑ One prototype (LA610) with a Griffon 85 engine and a Rotol six-blade contra-rotating propeller ↑ One aircraft as an engine test bed for the Griffon II ↑ Picture of the North American P-51D Mustang aircraft Retrieved 24 September 2011. ↑ Its All in the Details Retrieved 24 September 2011. ↑ Picture of the North American P-51D Mustang aircraft Retrieved 24 September 2011. ↑ Picture of the North American/Rogers P-51R aircraft Retrieved 24 September 2011. ↑ "Green Spirit tractor pulling team". Greenspirit.info. Retrieved 2013-01-07.