Source: Federal Reserve Bank of St. Louis  

Release: St. Louis Monthly Reserves and Monetary Base  

Units:  Billions of Dollars, Not Seasonally Adjusted

Frequency:  Monthly

Notes:

Updates of this series will be ceased on December 20, 2019. This series doesn't convey any additional information beyond what's available in the base series published through the H.3 release, BOGMBASE. The discontinued series plotted on the same graph for comparison can be accessed here.
For more details, see the FRED Announcement.

Source: Board of Governors of the Federal Reserve System (US)  

Release: Summary Measures of the Foreign Exchange Value of the Dollar  

Units:  Index Mar 1973=100, Not Seasonally Adjusted

Frequency:  Monthly

Notes:

Averages of daily figures. Series is price adjusted. A weighted average of the foreign exchange value of the U.S. dollar against the currencies of a broad group of major U.S. trading partners.

Broad currency index includes the Euro Area, Canada, Japan, Mexico, China, United Kingdom, Taiwan, Korea, Singapore, Hong Kong, Malaysia, Brazil, Switzerland, Thailand, Philippines, Australia, Indonesia, India, Israel, Saudi Arabia, Russia, Sweden, Argentina, Venezuela, Chile and Colombia.

For more information about trade-weighted indexes see the Board of Governors methodology.