I have generated an easy-to-read PDF of William Petty’s Taxes and Contributions. You can download it here.
Hard copies of the book, comprising poor photocopies of older editions, make difficult work on the eyes. This edition is typeset as a modern document. I did write a script to generate it though, so it’s likely that there are some errors in there. Please let me know if you find any.
Due credit to the nice people from McMaster University who transcribed the plain-text copy.