They contain a wealth of American demographic and consumer-spending data. So, explore the e-books on this page published by New Strategist to see the valuable information they offer.
For other helpful e-books, see the Find E-Books page of this guide.
The books below "give researchers even more detail about how much Americans spend by the demographics that count—age, income, household type, race and Hispanic origin, region of residence, and education. To round out the spending picture, researchers also get “who are the best customers” analyses of the data." (Quote is from the website of the publisher.)
Who's Buying: Executive Summary of Household Spending (10th ed.)
Who's Buying by Age (9th ed.)
Who's Buying by Race and Hispanic Origin (10th ed.)
Who's Buying at Restaurants and Carry-Outs (12th ed.)
Who's Buying Entertainment (11th ed.)
Who's Buying for Pets (12th ed.) by 
Who's Buying for Travel (11th ed.)
Who's Buying Groceries (12th ed.)
Who's Buying Health Care (11th ed.)
Who's Buying Household Furnishings, Services, and Supplies (12th ed.)
Who's buying Transportation (11th ed.)"Each of the ... volumes in the American Generations Series provides an in-depth look at the demographic and lifestyle data most important for researchers who want to understand how each generation is changing and what to expect from them in the future." (Quote is from the publisher's website.)
Generation X: Americans Born 1965 to 1976 (8th ed.)
Best Customers: Demographics of Consumer Demand (11th ed.)
American Health: Demographics and Spending of Health Care Consumers (3rd Ed.)
Americans and Their Homes: Demographics of Homeownership (3rd Ed.)
Who We Are: Asians (2nd Ed.)
Who We Are: Blacks (2nd Ed.)
Who We Are: Hispanics (2nd Ed.)
American Attitudes: Who Thinks What about the Issues That Shape Our Lives (7th ed.)
American Time Use: Who Spends How Long at What (2nd Ed.)
Demographics of the U. S.: Trends and Projections (5th ed.) by Links to additional demographic resources may be found in the book below.