The Carl and Ulrika Dalander Cassel House is a historic residence located in Madrid, Iowa, United States.

This Greek Revival structure is believed to be the oldest frame house in town.

Carl Cassel came with his father and the first group of immigrants to the Iowa Territory in 1845.

Anna Dalander led another group of immigrants the following year and intended to settle in the same place, but they took the wrong river and ended up in Boone County.

This article about a property in Boone County, Iowa on the National Register of Historic Places is a stub.