Railroads/Rail-Related

• Colorado Railroad Museum
• Great American Station Foundation
• Rio Grande Modeling & Historical Society
• Rocky Mountain Railroad Club
• Union Pacific Foundation

Research Resources

• Boulder Carnegie Branch Library for Local History: Historical Photographs and Images
• Bureau of Land Management Land Patent Records
• Colorado Digitization Project
• Colorado State Archives
• Colorado State Library
• Colorado State University Libraries - Historical Resources
• Denver Public Library Western History Photography Collection
• Denver Public Library Researching Building Histories
• Fort Collins Public Library Local History Archive
• Jefferson County Historical Commission Place Name Search
• National Archives
• Library of Congress
  • HABS/HAER Collection

Secretary of the Interior's Standards

• The Secretary of the Interior's Standards and Guidelines for Archeology and Historic Preservation
• The Secretary of the Interior's Standards for the Treatment of Historic Properties, 1995
• The Secretary of the Interior's Standards for Rehabilitation
• The Secretary of the Interior's Standards for Rehabilitation & Illustrated Guidelines for Applying the Standards
• The Secretary of the Interior's Standards for the Treatment of Historic Properties with Guidelines for Preserving, Rehabilitating, Restoring and Reconstructing Historic Buildings

State Agencies

• Colorado Commission on Higher Education
• Colorado Department of Transportation Scenic and Historic Byways
• Colorado Division of Gaming
• Great Outdoors Colorado
• State of Colorado

State/Tribal Officers

• National Park Service List of State Historic Preservation Office Web Sites
• National Association of State Archaeologists
• Tribal Historic Preservation Officers
• National Association of Tribal Historic Preservation Officers

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