http://tags.library.upenn.edu/tag/census+data+history PennTags Feed http://tags.library.upenn.edu/makerecord/ered/6252 http://tags.library.upenn.edu/makerecord/ered/6252 <div class="mlacite">IPUMS<br />REQUIRES FREE REGISTRATION. Census microdata from historic national censuses, U.S. and worldwide. Only provides microdata data sets, with data subsetting and extraction, and documentation. Frequency distributions and crosstabulations not provided.<br /></div>