BiblioVault may have an electronic file which would meet your requirements for this title:
On Sunspots
Galileo Galilei, Christoph Scheiner, Eileen Reeves, Albert van Helden, Eileen Reeves and Albert van Helden
Paper: 978-0-226-70716-7
Cloth: 978-0-226-70715-0
Electronic: 978-0-226-70717-4