| Harrison's Manual of Medicine Description: An on-line textbook about internal medicine. | all full text reference tools |
| Heritage Quest Online Description: Find ancestors in the U.S. Federal Census (1790-1930) and search for information about people and places described in family and local histories. | all full text indexes/databases |
| Historic Documents Series Description: A database of key historical government documents from United States history. Includes presidential statements, resolutions, reports, treaties and more. | all full text reference tools |
| Historic Map Works Description: Extensive digital map collections with over 200,000 high-resolution, full color historic maps. The core of the collection consists of property and land ownership maps illustrating the geographic and development history of the United States. | reference tools reference tools |
| Historical Statistics of the United States Description: A standard source for historical statistics in American history. Tables can be downloaded in Excel or CSV. You can create custom tables by merging columns from multiple tables. | reference tools reference tools |
| History Resource Center: U.S. Description: Brings together a broad collection of resource for U.S. history research. Includes primary materials, historic documents,encyclopedia articles, links to digitized special collections, and full-text periodicals and scholarly history journals. | indexes/databases indexes/databases |
| Hoover's Online Description: Offers company, industry, and market information. | indexes/databases indexes/databases |
| Human and Civil Rights: Essential Primary Sources Description: This ebook provides overviews, excerpts and some full text of first-hand historical documents related to human and civil rights. | some full text reference tools |