Consumer Credit and Debt: Current and Historical Data

Understanding credit and debt is the key to the modern economy.

So, here are some multi-year statistical series out there for you. Things like credit outstanding, amount used, and more.

(The following are .gov sites)

Consumer Credit and Payment Statistics (streamlined presentation of Fed data below)
Consumer Credit and Finance Company Data from the Fed
Personal Savings
Flow of Funds from the Fed Reserve (measures households)
Consumer Credit Out There

You can also search FRED, the data machine from the St. Louis Fed. A pre-done search for all results with "credit" is here.

And

Here is our collection of books, optimistically called consumer credit in our official library speak. Bankruptcy and Personal Finance are also good subject headings.