Hi Aprilmcan!
Welcome to Deskdemon!
For two years, I was the editor for our local IAAP chapter's newsletter, and it was lots of fun - I learned a lot and it was a great way to be creative.
This is what I learned regarding copyright laws:
Before you use information in your newsletter, keep this in mind - several caveats to consider: You should always ask for permission to use copyright material. And, in general (overall), most owners of copyright material do not have a problem with you using their stuff as long as:
1) You are not using their stuff and charging a fee for your customers (basically you are getting money for using someone else's info). If the newsletter is free, and you are just sharing information, I've never had someone deny me use of their material.
Be sure to always reference the author and source of your information inside the byline or at the end of the information you've published.2) If you are using information from the Internet (a great source) be sure to publish the hyperlink location at the end of the story.
3) Cartoon strips - be very careful about using these without specific permission from the owner! Cartoonists are kinda sticky about this - I've never used somebody else's cartoons... Perhaps you could get an idea from the cartoon and draw your own? (just an idea)
4) I had subscriptions to several newsletters and sometimes I would publish little tidbits from those newsletters. The owners of that material generally did not have a problem with me using their info (because I SUBSCRIBED to their publication), and I always referenced the source. If you subscribe to other little newsletters, that is another great way to find neat little tidbits...
Enjoy and have fun with your newsletter!!

SNA in Alaska