If you don't do so in your cover letter, be sure to address the issue of your ability to initiate and complete a research program on an independent basis. Remember, you will no longer have the cohort of similarly oriented and similarly trained people around you that you enjoyed in graduate school, nor will you have the technical support staff. 1. Course syllabi 2. Course syllabi are often quite informative, so including a few representative syllabi. If you've taught successfully in the past, any evidence that you can supply to a prospective employer is going to help your case.
Student evaluations are useful, both numerical ratings and open-ended statements from students.
Faculty evaluations are also useful. Our ads always ask specifically to have applicants include such materials, yet they often fail to do so. Even if the ad doesn't ask you to send evaluations, it is likely to aid your case if you include them. Highlight those that you've already taught. Check to be sure that your teaching interests are consistent with the courses mentioned in the advertisement.