I like Patricia's suggestion of joining the Chicago Manual forum. I think the fee would not only sift out the not-so-serious, but would save multitudes of time by not having rabbit hole comments sections to peruse. I have always found the best approach, even when I know an answer chapter and verse is to query, particularly for someone with whom you're working for the first time. Thanks for this post. It was confirmation that I made the right choice by taking the editing/copyrighting course that I am currently enrolled in.