Mail Order Brides: Oh, Sister! (Two Clean Western Historical Romances)

The Identical Twin Switch - A woman's twin sister becomes widowed so she arranges for her to go to Kansas with her, where she's to be married to a mail ordered husband. Unknowingly, they are roped into playing a game they've had long practice at when the one engaged woman's fiancé switches with his twin brother because the 'real' one had to stay on their ranch and build a new house for he and his soon to be bride.
Three English Sisters, One Cowboy & The Navajo Nation - Three sisters from London strike out for the Americas, where one already has a fiancé in waiting - a cowboy in Nevada. He knows that two other women are coming but doesn't know what he'll quite do with them when they arrive. They garner plenty of attention from the other men in town and soon, the cowboy finds that his small house has become crowded as he and his new bride seek a little bit of privacy to start their lives.