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Reference.org
Thomas Guide
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<p><i>Thomas Guide</i> is a series of paperback, spiral-bound <a href="/facts/Atlas_(cartography)/0P16fANt">atlases</a> featuring detailed street maps of various large metropolitan areas in the <a href="/facts/United_States/P0sCdLe5">United States</a>, including <a href="/facts/Southern_Idaho/aPfIMt5Q">Boise</a>, <a href="/facts/Las_Vegas_metropolitan_area/FoIh2AFN">Las Vegas</a>, <a href="/facts/Southern_California/1CaAWjd2">Los Angeles</a>, <a href="/facts/Oakland/84tfrNlx">Oakland</a>, <a href="/facts/Phoenix_Metropolitan_Area/NusTFa0R">Phoenix</a>, <a href="/facts/Portland_metropolitan_area/RFbnNgge">Portland</a>, <a href="/facts/Reno,_Nevada/Vvwy80oF">Reno-Tahoe</a>, <a href="/facts/Sacramento/L2BulyUg">Sacramento</a>, <a href="/facts/San_Francisco/cb9l7hbC">San Francisco</a>, <a href="/facts/Seattle_metropolitan_area/0coLAYvA">Seattle</a>, <a href="/facts/Tucson,_Arizona/26QPvEaG">Tucson</a>, and <a href="/facts/Baltimore-Washington_metropolitan_area/EUs75hBy">Baltimore-Washington metropolitan area</a>. Road Atlas titles are <a href="/facts/Arizona/6ayM3swJ">Arizona including Las Vegas</a>, <a href="/facts/California/zLW2vdQJ">California Including portions of Nevada</a>, and <a href="/facts/Pacific_Northwest/EjJhETXc">Pacific Northwest covering Washington, Oregon, Western Idaho, Southwestern British Columbia</a>. The map books are usually arranged by county; for example, separate <i>Thomas Guides</i> have been published for <a href="/facts/Los_Angeles_County/y0xFvt6t">Los Angeles County</a> and <a href="/facts/San_Diego_County/xIFTfn92">San Diego County</a>. There are also guides that will have two or three counties combined (for example, Los Angeles and <a href="/facts/Orange_County,_California/bQkv6Uxf">Orange County</a>), or guides that cover a metropolitan area (for instance, the <a href="/facts/San_Francisco_Bay_Area/MG53NJ36">San Francisco Bay Area</a>). Each guide has a detailed index of streets and points of interest, as well as arterial maps for easy page location. </p><p><i>Thomas Guides</i> were a local icon in Southern California for decades, with many companies including the <i>Thomas Guide</i> map grid information for their locations in Yellow Pages listings and other advertisements. </p>