For people interested in a good faith, as it were, debate, let me say a few things https://twitter.com/benshapiro/status/1254786653329125379

First of all, if there's a paper (or op ed citing an underlying paper) of more than a decade ago, you'd want to look for subsequent scholarship

There is, as it happens, a lot. It points out, in brief, several concerns with C&O

1. C&O use a model that assumes there is no involuntary unemployment.

(You may insert your own Halpertian look to camera here)

2. More to the point, C&O argue that cartelization—legalized price-fixing and other stabilization under NRA—made industry less competitive than it had been: but in fact, U.S. industry was already pretty concentrated and noncompetitive before 1929

(you may have heard of US Steel, Standard Oil, the great merger movement, or Berle and Means, among others)

3. C&O argue that because hours worked per adult went down and stayed down in the crash, that therefore there was no recovery; see blue line here

http://2.bp.blogspot.com/-bDS67hSs0dM/ToMKVun2pSI/AAAAAAAAAMo/zcyItBNC0uw/s1600/ohanian.png

but if you extend hours worked per adult beyond 1939, you see that its long-term trend is down, which makes you wonder if it's a good measure of recovery

(I mean, unless you give a lot more context)

4. but maybe most of all, they're only really looking at NRA and maybe a little NLRA. There's a lot more to the New Deal than that.

for more on C&O see Hannsgen and Papadimitriou

https://www.jstor.org/stable/40722622 

or see @delong 's Congressional testimony of 2009 https://books.google.com/books?id=o9H1wQYeQNgC&lpg=PA59&dq=ohanian%20%22total%20hours%20worked%22&pg=PA53#v=onepage&q&f=false

Thinking more broadly than C&O: here are the official dates of the business cycle

https://www.nber.org/cycles.html 

Recovery from the Depression began in March 1933, and proceeded to May 1937; there was a recession until June 1938 when recovery began again

Rates of GDP growth, as @zachdcarter says, were high https://twitter.com/zachdcarter/status/1254799188388438016

Or, to quote Romer, "These rates of growth are spectacular, even for an economy pulling out of a severe depression"

https://www.jstor.org/stable/2123226