Obverse of card: Grotto, Christiansens Rock Garden, Albert Lea, Minn. Reverse of card: Christiansens Rock Gardens famous throughout the country for their beauty, are located two miles northwest of Albert Lea. Publisher: E.C. Kropp, Milwaukee, Wis. #30606 Postmarked: Minneapolis, Minn. - Jan 4, 1943 MNM# 01-04151 |