Hey Ann,
Perhaps you and your husband could take a look at the following link:
http://www.founders.org/library/dagg_vol2/ch5.html
Specifically, look at Section IV-OPEN COMMUNION
Here are a few highlights:
Dagg practiced Closed Communion, but probably not in the sense we might think. He seems to only practice it with regard to unbaptized persons. Baptists have typically held that infant baptism is not baptism, therefore Pedobaptists, while being true Christians, are unbaptized. Therefore, the Lord's Table in their Baptist churches were withheld to Pedobaptists.
But while he has in view strict communion with regard to Pedobaptists, the main point is that the Lord's Table is reserved for baptized persons.