John Maynard Keynes’s emphasis on the need to implement post-crisis economic policies in the right order is highly relevant.

The advisers in FDR’s “brain trust” were reformers, not Keynesians, and had a different view. 

Attributing the Great Depression to excessive corporate power, they thought that the route to recovery lay in institutional change. As a result, so-called Keynesian stimulus was a minor component of the New Deal – emergency treatment pending longer-run cures.

Robert Skidelsky March 16, 2021 Project Syndicate

https://www.project-syndicate.org/commentary/keynes-criticism-of-new-deal-relevant-to-covid19-by-robert-skidelsky-2021-03

The lessons of 1937

https://www.internetional.se/1937.htm