This section is from the book "The Gardener's Monthly And Horticulturist V21", by Thomas Meehan. See also: Four-Season Harvest: Organic Vegetables from Your Home Garden All Year Long.
These have been again tinkered. We have been trying to find out in what way this affects Horticulturists, but cannot succeed, for the Postmaster General has not been able to fully advise as to how the law is to work. There was some endeavor to allow names and descriptions of plants, seeds and similar matter to go with the objects, but it was worded that "written communications not of a personal character, might go with third-class matter at third-class rates." The Postmaster General, up to latest advices had come to the conclusion that each local Postmaster must decide for himself what is, or is not a "personal communication".