At the link below, you will find a PDF of the book Horrors of Vaccination Exposed and Illustrated. This seminal work was published in 1920, and is an eye-opening examination of the dangers of compulsory vaccination.

According to the book, vaccinations were causing far more deaths than smallpox itself at that time.

It contains a petition to then-President Woodrow Wilson, asking him to stop the practice of compulsory vaccination. Alas, the warning was not heeded.

This is just one of more than one million public domain books now made available for free download by Google Books.
 
The books are in a format known as EPUB. By adding support for EPUB downloads, they hope to make these books more accessible by helping people around the world to find and read them in more places.

EPUB is a lightweight text-based digital book format that allows text to automatically conform to smaller screens like netbooks. And because EPUB is a free, open standard, works you download from Google Books as EPUBs won't be tied to or locked into a particular device.

To get started, just find any public domain book on Google Books, then click on the Download button in the toolbar.