Past Masters series encompasses the largest collection of full-text electronic editions in philosophy in the world. The series includes significant collections in the history of political thought and theory, religious studies, education, German studies, sociology, the history and philosophy of science, economics, and classics.
Google Books provides full-text access to titles that are in the public domain or have copyright permissions from the owner of the work. Only a preview is available for many titles that have copyright restrictions, but this can oftentimes be enough content to decide if the book is what you are looking for. Use Google Books to identify titles, then check the Bunch Library catalog or request an Interlibrary Loan to retrieve it.