Bibliography

Some useful references are as follows:

a) The Voided Long Cross Pennies of Henry III & Edward I

For a briefer synopsis the guide by Chris Wren, The Voided Long
Cross Coinage 1247-79, 2nd edition 2006, has some useful
additional information but is not as up-to-date as the Brussels
Hoard volume.

Eaglen book on Bury mint

Allen, Durham book

Allen – Mints and Moneyers

Stewartby

Colchester Hoard

Page, R. Apr-2018,  Henry III Long Cross Pennies Class 1a, British Numismatic Society Research Blog. (Link)

Page, R. Apr-2019, A Second Find of a Rare Henry III Long Cross Class 2a/1b Mule, British Numismatic Society Research Blog. (Link)

Thomas, Bob,  Oct-2018, The Recent Finds of Two Late Coins of London from the Long Cross Series in the Name of Henry III, British Numismatic Society Research Blog. (Link)

b) Continental Imitations of the Long Cross Series

J. Chautard – Imitations des monnaies au type esterlin frappées en Europe pendante le XIIIe et le XIVe siècle. Nancy, 1871. 

J.J. North – Some imitations and forgeries of the English and Irish Long Cross pence of Henry III. British Numismatic Journal 65 (1995), 83-119, 4 pls.      Link

J. J. North – Some imitations and forgeries of the English and Irish Long Cross pence of Henry III: Corrected catalogue. British Numismatic Journal 66 (1996), 117-22    Link (you will need to scroll down to page 117)

Churchill, R. & Thomas, B. The Brussels Hoard of 1908. The Long Cross Coinage of Henry III. London, 2012

.

c) The Short Cross Pennies of Henry II, Richard, John & Henry III