HISTORY RESOURCES AND RESEARCH TOOLS

USEFUL TOOLS

HP 12c Reverse Polish Notation (RPN) Financial Calculator [Click Here To Use]

   || Quick Start || Official User's Guide || Video: How RPN Calculators Work ||

Calculate the Day of the Week

Calculate Duration Between Two Dates

Calculate Inflation, yesteryear's dollars at future values.

UNIT CONVERTERS

A Gigantic Unit Converter: Business, Sciences, Currency, Plus.

Roman Numeral Converter

MAP TOOLS

|| Map Radius || Map Area || Distance || Elevation || Coordinates || Map Area || 

GOOGLE EARTH DESKTOP (Fully-Functional) - Free

GOOGLE EARTH INTERNET (The Basics) - Free

EARTH POINT - cool tools for Google Earth

Frontier Settlement Hierarchy by the Number of Residents.

CHICAGO RESOURCES

Chicago Community & Neighborhood Google Map.

Chicago Current District Names.

Chicago Current Street Names with Suffixes. 

Chicago Landmarks

Chicago Landmark Districts.

Chicago Street Renaming Document, 1909
Chicago Street Renumbering Document, 1909
Chicago Street Renumbering Document for Downtown 1911.

Chicago Tribune Newspaper Archive

ILLINOIS RESOURCES

|| Illinois Secretary of State || Corporate & LLC Business Search ||

National Historic Landmarks in Illinois List ||

GENERAL RESEARCH, NEWSPAPERS, ETC.

Digital Commons Network; Thousands of papers from worldwide universities and colleges.

Historic American Newspapers

Library of Congress

Library of Congress z39.50 Gateway; Library Catalogs. [about z39.50] 

National Archives and Records Administration 

Newberry Library, Chicago

Smithsonian Institution Research Information System (SIRIS)

U.S. Patents: Google

DATABASES

Vintage Schwinn & Co., Chicago, Catalogs from 1899 to 1988.

TERMS & PHRASES

Paper Town or Phantom Settlement is a community that appears on maps but does not legally exist.

QUICK REFERENCE of OLDE TYME MEASUREMENTS

1 Rod = 5.5 Yards.

A Surveyor's Chain = 22 Yards.

1 Nautical League = 3.45 Miles

1 Nautical Mile = 1.15 Miles