Add "Articles" to main menu
This will link to a BLOG PAGE displaying a few images and articles. When clicked, each article will open in its own page.
Create a second BLOG PAGE and add "Topics" to the main menu. Clicking "Topics" would display links to individual articles all grouped under their respective Topic (category). When clicked, each article will open in its own page (with accompanying image).
Another menu item might be added called "Bulletin" where archived links to the bulletin PDF's would be.