How long should a cover letter be when asked to include statements of teaching philosophy and research interests? I am a PhD graduate applying for teaching (assistant professor) positions at smaller liberal arts colleges. I understand that generally cover letters should not exceed 1 page, especially when applying to large research universities. However, are longer letters acceptable when applying to smaller schools? Again, the job posting requests that statements of teaching philosophy and research interests be included directly in the letter. If more than 1 page is ok, how long is appropriate?
For readability, it is certainly preferable to append.

If you feel your cover letter is a little skimpy, I suppose you might put something autobiographical in the cover letter, that was perhaps a little to personal for the actual statement.  For example, "my teaching philosophy was largely developed during my year as a VISTA volunteer teaching in ...."  (That's just an example -- your situation could be completely different.)

The cover letter is a good place to tie the threads together of the various portions of your application, to show yourself as a whole person, to project your personable qualities, and to get the reader interested in learning more about you.

I think you're right to keep it to one page.