Ms.,Mrs. and Miss in American English corpora

[Heather Colwell]

Please forgive the cross listing of this message.
I am looking for research on the use of women's titles in corpora of
American English.  I am especially interested in the frequency of title
use in spoken English.  I am not terribly concerned (at this point) with
who, when or why particular titles are used.  Any suggestions?

Cheers
Heather Colwell
Research Officer
University of Western Australia