Calculus: An Integrated Approach
This is a digital textbook “Calculus: An Integrated Approach” by Matt Cathey and Joseph Spivey. The textbook covers a two-semester calculus sequence for Wofford College. The text is freely available for use under the terms of the creative commons copyright, found in each of the textbook files.
The format of the text is Wolfram's Computable Document Format, which can be opened using the free Wolfram CDF Player. It is mobile compatible, using the CDF player app for mobile devices.