Searching Liens (IRS and Mechanic) Liens in Oklahoma County

[Ron Daugherty]

I've been using the Leonard Sullivan-Oklahoma County Assessor Public Access System to check for IRS or Mechanic liens on Auction Properties I'm interested in.

Is that the correct place for Oklahoma County?  Should I be checking somewhere else as well?   

I don't want to find out I've been searching the wrong place and get burned.