Want to use images already on the server

Say I have a sports website and I have an article content type. I have image of various sports in a folder on my website. I want to add an image field to each article that shows what sport the article is about, so every golf article gets a picture of a golfer, every soccer article gets am image of a soccer ball, every boxing article gets an image of a pair of boxing gloves, etc....

The thing is I dont need to keep uploading the same image multiple times for every article...for example all golf articles will use the same golfer.jpg image. I already have the images in a folder on my site, is there any way to just assign these existing images to a cck node? Or do I have to upload the same image every time if I use the ImageField module?