Gospel Mission is a work and outreach of Old Paths Strict Baptist Church in Choteau, Montana. I've ordered from them from time over a period of several years. But I didn't know they have a web site until recently. Gadsby's Hymn Book, a book of hymns by English Baptist preacher William Gadsby, is available from them. Joseph Hart's hymns offer some great reading on experimental religion.
Sacred Harp blog addresses
Sacred Harp alto, blog of Sharona Nelson, Sacred Harp alto and author
Will.Whim, a weblog by Will Fitzgerald
One of the Baptist blog's I check frequently is Joining God in His Work, by Leslie Puryear. Brother Les is a Southern Baptist pastor. We have had discussions in which we didn't see eye to eye. But sometimes you just run across someone like Les that you like, no matter what the differences. [P.S. -- we agree on some things, too.]