This post is thanks to a tip from Jack Sargent:
Brian DeWitt, writer for the Gay People's Chronicle, wrote a fantastic article listing the ordinances in various Ohio cities which outlaw discrimination based on sexual preference. These ordinances are particularly important in Ohio, because there is no Ohio or Federal law explicitly prohibiting discrimination against homosexuals, bisexuals and/or transgender individuals. (Current sex discrimination statutes could possibly be utilized in a case where discrimination occurred based on sexual preference, depending on the circumstances.)
Some of the ordinances apply to all city residents, and aim to prevent discrimination in employment, public accomodations, credit or housing. Other ordinances only prohibit employment discrimination against city workers. The article also identifies ordinances disallowing discrimination in issuing parade permits. Additionally, sexual preference discrimination laws from other states are examined.
The article is: Over Half the Nation Will be Covered by an Equality Law by Brian DeWitt, Gay People's Chronicle, May 11, 2007. The article also appears at Google Groups - Transgender News.