Shire Publications, 2012
This lavishly illustrated book is a super reference guide to Georgian landscape garden buildings. It is organized into chapters on various structural forms from arches to grottoes to temples and towers.
John Fuller’s Brightling follies and other buildings are not mentioned but it is easy to map out into which chapters they would appear.
Mausolea and Monuments
Temples and Pavilions
The suggestion that Fuller advertised for a hermit to live in the tower seems to have been made long after the fact, so I would not include the tower in the “Hermitages and Root Houses” chapter.
The Sugar Loaf, on the other hand, is not so easy to categorize. Legend has it that Fuller had this cone-shaped folly built to win a wager that he could see the spire of St. Giles, Dallington from his home, Rose Hill.