Researchers contributing to the database are listed below. Please direct all queries about individual entries to the contact person listed in the database. Posting a postal mailing address online is optional. It is at the discretion of the contributor.

If you find any addresses that are obsolete, please email me. I will not delete entries which later become obsolete due to a failed email delivery, however, such entries defeat the purpose of the database - to help researchers contact one another.

Note:   I recently eliminated the hyperlinks for the email addresses - the feature which opens an email window when you click the address. There are software programs that can search web sites for these hyperlinks. To minimize the chances that contributors' email addresses might be harvested for junk mail lists I am discontinuing the hyperlinks. It will take time but I plan to do this on the entire site.