Get to the point. Don't ask the editor to send you a copy of the publication with your story in it. You are attempting to build bridges, not burn them. You can call the circulation department and buy copies of the edition your news note appeared in. Ride the coattails of a pre-existing story that is already in the news.
Editors seek local comment and ties to national stories.
For example, the Associated Press writes a national trend. Package your story so that is of use and interest to an editor's readers. Get that story to the right editor. Follow up with enthusiasm and diplomacy. Continue to keep the channels of communication open.