The document provides a timeline of notable events and developments in Lincoln Park located in College Heights, Rock Island, Illinois from 1821 to 1960. It outlines the founding and early additions to the park in the early 20th century. It then discusses two major turning points - the establishment of Alleman High School in 1949 which provided a Catholic alternative to public schools, and individuals like F.C. Denkmann and Naomi Davenport who made significant donations to further develop the park and neighborhood. Paired images show the developments and changes over time to the park, surrounding areas, and Alleman High School building.