Can I read William Penn as the founder of two commonwealths online for free?

Yes, you can read the full text of "William Penn as the founder of two commonwealths" by Buell, Augustus C., 1847-1904. [from old catalog] for free on Lex. No signup or download required. Just open the book and start reading in your browser.

Is there a free audiobook of William Penn as the founder of two commonwealths?

"William Penn as the founder of two commonwealths" does not currently have a free audiobook available on Lex, but you can read the full text for free online.