This paper examines the Federal Reserve's unprecedented liquidity provision during the financial crisis of 2007-2009. It first reviews how the Fed provides liquidity in normal times. It then explains how the Fed's new and expanded liquidity facilities were intended to enable the central bank to...

[...]This article adds to the literature by estimating andevaluating a comprehensive set of liquidity measures for theU.S. Treasury securities market. High-frequency data from theinterdealer market allow for an analysis of trading volume,trading frequency, bid-ask spreads, quote sizes, trade...