He edited the Inventories and Valuations of the King's Goods, published in 1972, based on an inventory of the possessions of Charles I originally compiled in around 1639 by the first Surveyor, Abraham van der Doort.
He revised the Stocktaking and Assessments of the Royal Estate, released in 1972, drawing from an original list of Charles I's possessions compiled in approximately 1639 by the inaugural Surveyor, Abraham van der Doort.