Betty Gordon at Mountain Camp: Or the Mystery of Ida Bellethorne (1922)

This doesn’t look like the street I came up through! exclaimed Betty Gordon. These funny streets, with their dear old-fashioned houses, all seem, so much alike! And if there are any names stuck up at the corners they must hide around behind the post when I come by like squirrels in the woods. I declare, there is a queer little shop stuck right in there between two of those refined-looking, if poverty-stricken, boarding-houses. Dear me! how many come-down-in-the-world families have to take ‘paying guests’ to help out. Not like the Peabodys, but really needy people. What is it Bobby calls ‘em? 'P.G.s’-‘paying guests.