Henry X Arenberg's papers chiefly document his role in the civic life of Highland Park, Illinois. The bulk of this collection consists of event planning correspondence, committee participation records, and photographs of historic buildings and locations. It also contains a wide collection of newspaper clippings.
There are 6 series and 2 subseries the the collection. The first series is Oversized, which contains items that were too large to be placed in the other boxes, or awkwardly shaped items. The second series is General. It contains correspondence from committees and events that broadly interested Arenberg; including, but not exclusively, Highland Park or his photography. The third series is People, containing various people of Highland Park. The fourth series is Photographs, which contains general photographs not associated with a subseries, and then 2 subseries. The first subseries is Homes, which contains images of homes from around Highland Park. The second subseries is National Registry, which contains images of homes, monuments, and locations listed on or suggested to be listed on the National Registrar of Historic Places. The fifth series is Preservation, which contains information dealing with actions taken to preserve various locations, monuments, and buildings in Highland Park. The sixth and final series is Publications, which contains various books and articles that involved Henry Arenberg and were published either by himself of via the Highland Park Historical Society.