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 [log in to unmask] 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 > [log in to unmask] <mailto:[log in to unmask]> > http://www.mines.edu/library/ <http://www.mines.edu/library/>