Public domain ebooks can be downloaded without charge. The reason for this is because they have no more copyrights, so make sure never to buy classics (per 1923) because you can get them for free very easily.
Here is the list of the Top 5 ebooks for the American Libraries.
1. Goody Two-Shoes
Goody Two-Shoes was first published in 1888 and the version online contains colored illustrations. This books is consider a classic and a great story to read to your children, as it’s subject to nursery and education.
Abroad has a great atmosphere (French, I believe) and is also a classic that’s juvenile literature. The ebooks contained on archive.org has beautiful illustrations and the scan of the book itself is great.
3. Newton’s Principia : the mathematical principles of natural philosophy
This amazing volume deals with mathematics and can be sold for a good price, but of course since it’s in the public domain it can be received free. This volume is an early work from the 1800’s.
4. From Max Weber: Essays in sociology
Even though this book was made in 1946, its copyrights were never renewed and therefore it falls into the public domain. This is a great book for social sciences!
5. The decline of American capitalism
This interesting title deals with different types of subjects such as capitalism, economics, and communism is the United States. This book would be good for some government or history class whilst in college or even in high school. In other words, it’s a great reference tool to the past assumptions on the subject listed above.
All of these ebooks are, hence, in the public domain and can be downloaded or view free without cost. There are millions of public domain ebooks that are readily available to the public, yet people just need to know where to look. If you are interested in downloading these titles, just Google, public domain ebooks, and or public domain archive.