Ah—here’s the rub my friend:  the whole country was not tracted in those censuses.

If my cranky old memory serves: what you can get by filtering at NHGIS is what exists for 20 thru 50.  (Major cities and surrounds) or counties. 



Jon Jablonski
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Interdisciplinary Research Collaboratory
UCSB Library 



> On Sep 10, 2020, at 9:46 AM, Christopher Thiry <[log in to unmask]> wrote:
> 
> All,
> 
> I would like to find a website where I can see the US Census by tract (not county) for the 1920, 30, 40, 50, .... Census.
> 
> The complicating part is seeing by tract, not county.
> 
> Many thanks in advance.
> 
> Christopher J.J. Thiry
> Map & GIS Librarian
> Academic Outreach Coordinator
> Colorado School of Mines
> Arthur Lakes Library
> 1400 Illinois
> Golden, CO 80401
> p. 303-273-3697
> f. 303-273-3199
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> http://www.mines.edu/library/ <http://www.mines.edu/library/>