"Rykneld Recreational Ground". Archived from the original on 4 February 2011. Retrieved 4 February 2011. Derby Leisure and Parks site for history of Rykneld and Firs Estate
"Rykneld Recreational Ground". Archived from the original on 4 February 2011. Retrieved 4 February 2011. Derby Leisure and Parks site for history of Rykneld and Firs Estate