There are various versions of this book. A description on AbeBooks (May 2014) for a 2009 edition says: "Swarbrick was a farmer from Austby, near Ilkley on the River Wharfe. His list is "the earliest one known which gives detailed dressings for the flies and the times of the year for which they are most suitable" (Magee). Although written in 1807, it did not appear in print until 1907 when Ellis Beanlands published it together with J. W. Sagar's list of 1890. This edition lists only Swarbrick's dressings, together with modern substitutes." Another says "John Swarbrick, a farmer who lived in the hamlet of Austby, near the river Wharfe, wrote his manuscript list in 1807, not just a list of fly dressings but also a diary of natural events in and around the upper Wharfe. It was believed to be the earliest known list of artificial flies for that river. The list remained relatively unknown until it was printed as a small booklet exactly 100 years later in 1907 and very few copies of [that edition] have survived."