Hi,
I hope this is OK. I plan on posting when I find errors. Two county names are spelled differently on B1903. They are, Bayamón Municipio, Puerto Rico and Doña Ana County, New Mexico. The special characters are presented differently. I use names to match data sets and this is how I found out. In the other 30 tables all names matched exactly.
If you read those in as UTF-8, the accented characters should appear correctly. It also occurs in New Mexico, Doña Ana county, as well as some places in Colorado and California.