K.
yes, you need a notarized consent from your husband. as an aside, we are a two-mom family, both of us are listed on the birth certificate. We carried this as well as the court documents establishing both of us as our son's only legal parents (he was conceived thru anonymous donor insemination). We got a big hassle going through Canadian Customs because of the letter issue. It was finally resolved, but with a great deal of stress. I've heard from a lot of folks who have been held up, so don't try to do it without the letter.