The 4th Edition of the Professional Railroad Atlas of North America includes all of the latest railroad changes due to mergers & acquisitions, changes in ownership, out-of-service and abandonments. The Atlas has over 100 pages of railroad maps and related information. All of the maps are in full color and the major railroad lines are color-coded. Over 700 railroads in the United States, Canada and Mexico are shown. Maps of each state and province are included and more than 70 detailed city/regional maps show key railroad areas. Two reference indexes provide railroad information: 1) an index of reporting marks 2) an index of railroad company names with address, phone number and web site address.