Under the impression it was WWII. 

Karl Wolz
Sent from my electronic umbilicus

> On Apr 17, 2015, at 1:03 PM, Edward Maglott <emaglott3@GMAIL.COM> wrote:
> 
> I guess that's true.  When did they stop using the rough cut lumber, and
> why?  I'm sure there is additional profit there in those fractional
> differences.
> Edward
> 
>> On Fri, Apr 17, 2015 at 11:51 AM, Loren Busch <starwagen@gmail.com> wrote:
>> 
>> ​RE: "... rather than that newfangled "2 inch
>> unfinished size, 1 and 3/4 inch finished size" lumber they use nowadays."
>> 
>> Not 'new' at all, finished lumber (vs. rough cut) has been measured that
>> way for at least 100 years probably longer. a rough cut 2x4 is 2"x4" but
>> finished (nice and smooth) is 1 3/4" by 3 3/4".
>>