Looks like there's a lot of McGraw-Hill Book Company (now McGraw-Hill Education, not sure if that has something to do with it) books on archive.org, particularl

Looks like there's a lot of McGraw-Hill Book Company (now McGraw-Hill Education, not sure if that has something to do with it) books on archive.org, particularly from the "Public Library of India." I'm wondering if these came through some digitization effort that slipped through copyright, or maybe the original digitizer had obtained specific permission for these volumes? Definitely not obvious to me. https://archive.org/search.php?query=creator%3A%22McGraw-Hill+Book+Company%22&page=2 https://archive.org/search.php?query=creator%3A%22McGraw-Hil...