Vital Source, Ingram's e-textbook solution for publishers, academic institutions, and students, has announced 60 publishers have added more than 35,000 new digital textbooks and online course materials to the VitalSource Bookshelf platform. These newest publishers join Cengage Learning, Elsevier, Wiley, McGraw-Hill, and more than 200 other publishers that currently make content available through VitalSource Bookshelf.