Osro Baldwin, (uncle of Charles Baldwin, one of the early County clerks) was one of the early settlers on Seven Mile creek. He lived on a part of the land now owned by J. W. Brown. He lived in a cave more than a year, and built a house in 1857 which still stands. Mr. Baldwin died on the farm, and his widow, who was kindly known as "Aunt Phebe Baldwin," now resides in Colorado.
From "History of Cass County, Iowa Together With Brief Mention of Old Settlers," by Lafe Young, Atlantic, Iowa, Telegraph Steam Printing House, 1877, pg. 59.