Published by George at an unknown date, this catalogue documents works that were missed or painted after the original Catalogue of One Thousand Original Studies in Water Colours of the 313 Old Parish Churches of Sussex, from the Year 1850 was printed.
A photocopy of the supplementary catalogue was discovered at the West Sussex Records Office in March 2023, and an original copy at the East Sussex Records Office in June 2023.
Both copies contain slightly different handwritten notes on the front cover, stating that a 2nd supplementary catalogue containing fifty additional paintings will be printed—however a copy of this final catalogue is yet to been found.
A reproduction of the supplementary catalogue can be downloaded below.