Thank you all so much for the advice! I just got the contract in my e-mail and am looking over it now.
Here is a snippet of the letter that came with it:
" Basically, the main contract details the business relationship, so we should both get a signed, notarized copy of that. That will remain the contract between us until one of us chooses to change it (for instance, if we collaborated on a project and needed to split the royalties or something). Then, for each project we would do together, we just use the addendum. So, for instance, for this initial promo image you're doing, that's what we'll put on the addendum. If, in the future, I'm able to commission more work for the project, the contract remains in place and we just do another addendum with the new scope of work. We can keep doing that indefinitely for any future projects. "
Is that normal?
It is a work for hire contract and I did respond requesting a First Publication Rights agreement instead.