I scanned many of these exams before the department acquired a .pdf machine that feeds large numbers of sheets and produces a nice, clean .pdf file. Some of these may be rather hard to read, I'm afraid.
A very wide selection of past midterm and final exams will be archived at the College Library Reserves Website as soon as the library completes its transition to its new Web format. (Select course to find old Cameron exams. These have been optically scanned, and there are some resulting typographical errors that did not exist in the originals. Caveat emptor.)