African-American History Online
African-American History Online provides expansive and in-depth information on the people, events and topics important to the study of the African-American experience. This database covers more than 500 years of history and includes biographies, primary source documents, timelines, an image gallery, and maps & charts.

American History Online
American History Online spans more than 500 years of political, military, social and cultural history, highlighting the important people and events of the American experience. This database includes biographies, primary source documents, timelines, an image gallery, and maps & charts.

American Indian History Online
American Indian History Online offers thorough access to more than 15,000 years of Native American culture, history and heritage through event & topic entries, biographies, images, maps & charts, legends, primary sources and timeline entries. Information about more than 500 Native American groups can be found in this resource using the "Tribe Index".

American Women's History Online
American Women's History Online covers the important people, events, legislation and issues relevant to the study of women's history in the United States. This database covers more than 500 years of history and includes biographies, primary source documents, timelines, an image gallery, and maps & charts.

Ancient and Medieval History Online
Ancient and Medieval History Online explores the pre-modern world with in-depth focus on Egypt, Mesopotamia, Greece, Rome, Africa, Europe, the Americas and Asia. There are 18,000 entries covering prehistory through the 1500s including biographies, primary source documents, timelines, an image gallery, and maps & charts.

Biography Resource Center
Biography Resource Center is your one-stop resource for more than 435,000 full-text biographies on notable figures in literature, science, history, government, business, art, religion, entertainment, sports and much more.

Colorado Historic Newspaper Collection
Colorado's Historic Newspaper Collection (CHNC) currently includes 117 newspapers published in Colorado from 1859 to 1930. Newspapers come from 66 cities and 41 counties throughout the state, which were published in English, German, Spanish, or Swedish. Currently available newspapers include The Colorado Daily Chieftain/Pueblo Chieftain from 1872-1877 and The Colorado Weekly Chieftain from 1868-1880, both published in Pueblo.

Culturegrams
Culturegrams provides concise information on daily life and culture, including the history, customs, recipes and lifestyles of the world's people for 187 countries and information on all 50 United States including geography, history, population, culture and symbols.

HeritageQuest
HeritageQuest is an essential collection of unique material for both genealogical and historical researchers with coverage dating back to the late 1700s. Find ancestors in the set of U.S. Federal Census images from 1790-1930 including name indexes form many years. Search for people and places in over 20,000 family and local histories. Additionally, there are more than 250 primary-source documents such as tax lists, city directories, probate records, Revolutionary War records, Freedman's bank records and more.

Modern World History Online
Modern World History Online covers the people, places and events in the broad expanse of world history - from mid 15th century to the present. This database can be browsed by both global regions and time periods and includes biographies, primary source documents, timelines, and maps & charts.

Sanborn Maps - PCCLD has digital access to maps for Colorado, New Mexico, and Wyoming
Sanborn Maps provides digital access to large-scale maps charting the growth and development of Amercian towns and cities from 1867-1970. Sanborn maps are valuable historical tools for urban specialists, social historians, architects, geographers, genealogists, local historians, planners, environmentalists and anyone who wants to learn about the history, growth, and development of American cities, towns, and neighborhoods.