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ALT Page from a book featuring Chapter 23 on "Maps with Circles and Sector Charts." The left side includes a diagram illustrating methods for indicating area representations using circles, while the right side presents two maps showing gasoline tax rates and average cash income from livestock in the United States, each circle representing specific data values.

ALT Two-page spread featuring bar charts illustrating financial data from the National Industrial Conference Board. The left page presents loans and investments of Federal Reserve member banks from 1929 to 1935, with various categories and totals displayed in red and black bars. The right page details net income and deficits of government-owned railways across foreign countries in 1935 or 1936, showing miles of railway and net income per mile, also using a similar color scheme.

ALT A page from a book showcasing two bar charts. The first chart illustrates the distribution of income among the U.S. population in 1929, detailing income brackets and percentages. The second chart compares items ordered, orders, and sales for candy plants in 1930, with breakdowns of percentages for different ordering frequencies. The page includes text explaining how to read the charts and characteristics of bar charts.

ALT A page from a publication featuring two organization charts. The left side displays three types of geographical divisions of work with visual representations, labeled "No Geographical Subdivisions," "Centralized Geographical Subdivisions," and "Decentralized Geographical Subdivisions." The right side shows an organization chart for the Shell Plant in Erie, Pennsylvania, illustrating the hierarchy of the American Brake Shoe and Foundry Company using various shapes and lines to indicate different divisions and roles.