DCATM is an interactive map that provides users access to over 30 different years of aerial photography spanning to 1927. The interactive map displays side-by-side comparison of two air photos at a time.
Minnesota--Dakota County (n.d.). Air Photo Time Machine [Minnesota--Dakota County]. . https://gisdata.mn.gov/dataset/c629c048-5e60-47d7-a814-b21c662933dc (imagery)