Reserved for sources and miscellaneous notes that don't make sense to keep in the initial post.

Link to 1st Source.

Link to a 2nd Source/Discussion.

Link to a 3rd Source/Discussion.

Link to a 4th Source/Discussion.

Note that these are just some samplings of the discussions related to this topic. Over time these typically move off the 1st page of active topics and get lost/buried in the forum...