Tlaltenango Census

Hello,
I came across an old posting which stated that the 1650 (and other?) Census for Tlaltenango had been posted online on yahoo.com. But that yahoo group is no longer active and I haven't been able to find the scans on NuestrosRanchos.com

Does anyone have a copy of the Census for Tlaltenango for the 17th & 18th centuries? I've already looked at the 1773 Census, which is available online at the Guadalajara Diocesis, but am hoping to look at other years.

Thanks,
Arturo Gonzalez