I did it! Well, actually--we did it! I printed off the first 50 pages of our book, enclosed a SASE, printed the address on the larger envelope, placed the pages inside, along with a cover letter and mock book cover (something I learned at a writers' conference) and sealed the envelope tightly.
But instead of going to the post office myself (how boring), I picked up my dad and we went together. When I mailed it, the lady at the post office, seeing the address, asked me if it was a book. I told her about it briefly and she asked me to tell her when it is published so that she can buy it. Remarkable! What a beautiful moment.
I know that this particular agent may not be the one for me, but somehow that's OK. The day was as it should be...perfect!