Venn diagram comparing MeLCat and Interlibrary Loan (ILL) systems. The left yellow circle represents MeLCat, described as a Michigan-based interlibrary loan system with an estimated delivery time of 7-14 days. It does not support requests for scans of journal articles or book chapters. The right green circle represents Interlibrary Loan (ILL), described as a worldwide system with an estimated delivery time of 14-21 days for books and 1-3 days for articles, supporting requests for scans of journal articles and book chapters. The overlapping section in the middle indicates both services allow users to request physical loans, with a note to check MeLCat first.