The New Orleans library has an Alphabetical Index of Changes in Street Names from 1852 - 1938.  I don't know if this will help with the question about property in McDonough, but here's the link:    http://nutrias.org/~nopl/facts/streetnames/namesa.htm   Please support me in the N.O. Komen Oct. 23.  http://tinyurl.com/DonateToKomen