The information contributors (the Two Centers) will simply email the information to be shared to the Blog of his/her choice and the blogger will in turn publish it wherever he can squeeze it in. Same with photos, together with a real or pen name that can be used. Can be as little as one sentence which would be better in the comments section of any blog. One or two paragraphs would be ideal as well as a couple photos. At any rate, the information contributors and the guest authors can work it out to their mutual satisfaction.
"When you arrive at perfection and are without sin - then you certainly have the right to speak out against the sins of others."
What is a guest author? The guest authors in our blogs really have a blog within the blog of their choosing. Once they decide they want to, the blog owner will notify Blogger and Blogger gives the OK and the password is between Blogger and the guest author. The guest author can then get in, open his/her own new blog, post any articles, photos as he/she wishes. Can edit, save, close or publish just like any blogger. He/she can do this whenever they wish without saying boo to anyone. The guest postings belong to the guest author and are so attributed, so the concept is quite straightforward. And the Guest Author has a blog with ready made readers.
"I'll Remember You" by Don Ho

All four of our bottom blogs have hit the wall. Actually I prefer to call it a plateau because they have SOS. They are all poised to go into the 20s. Watch them when they get information contributors and guest authors. The hits are going to go through the roof. And I can plan on making the best one into the first independent.
Bloggers Law #37E: "If an idea can survive a bureaucratic review