The sites below offer collections of open access textbooks for multiple subject areas. Most content is free; some sites require registration. Check with your professor before you use an open access textbook for your course work.
NOTE: If you are looking for a textbook for an LSB internship, you have a couple of options:
Tip: For open access textbooks, start with the first three sites linked below.
Email Butler University Libraries
Irwin Library: 317-940-9227
Science Library: 317-940-9937
CAT: 317-940-8575