CTPP? I will guess NO unless your MPO purchased it with tracts as your TAZs and can find the data. I don't have the list of 1970 purchasers handy but there were 112. As far as regular census data your state data center would be the place to start or more likely the regional agency that deals in population estimates for the area. Archiving the past CTPP (and UTPP) data has been a concern of many of us for quite some time. There is a small collection of 1980 UTPPs around (maybe parts from 3 to 4 agencies) but that is about it. At several different times small volunteer efforts have put forth to pull together the older CTPPs but they never resulted in much. In conversations I have had with Census staff the older UTPPs were treated as special tabs and as such did not go through the same archive procedures as did the census products. While the total UTPPs might not exist, parts of them may exist on microficsh deep inside the Census Building but getting to and working with them would take time, money and resources. What would be nice is if we could interst some philanthropic doner to fund a data expedition. Rob CASE wrote: -- Ed Christopher Planning and data guy 708-283-3534 (V) 708-574-8131 (cell) FHWA RC-TST-PLN 19900 Governors Dr Olympia Fields, IL 60461