To find books on Martin Luther King: Go to the online catalog at https://eaglelink.cornerstone.edu/.
Type in Martin Luther King and select Keyword and hit the Search button. You will now have a list of books about Martin Luther King that are available at Miller Library Cornerstone University, Zondervan Library at Kuyper College, and Puritan Reformed Theological Seminary. For items at Cornerstone only choose "Cornerstone" from the dropdown menu rather than the default "View Entire Collection".