- maps (documents)5,730
- newsletters5,398
- publications (documents)4,700
- marriage licenses4,554
- slides (photographs)4,513
- periodicals4,406
- files (document groupings)4,248
- letters (correspondence)3,895
- born digital3,736
- maps3,195
- judicial records3,153
- color transparencies3,110
- black-and-white prints (photographs)2,961
- minutes (administrative records)2,862
- safety film negatives2,835
- executive orders2,834
- postcards2,755
- military records2,753
- editorial cartoons2,614
- oral histories (literary works)2,397
