They do sell these little plastic corner tabs that you can stick to the back of a frame and slide the magazine into.

Unfortunately, I've somehow managed to reach my bandwith limit for the month on Photobucket, so I can't post a picture. See if this link works, though.

http://s272.photobucket.com/albums/jj179/Iowa49erFan/49ers%20Memorabilia%20NFT%20NFS/Magazines%20and%20Books/?action=view&current=DSCF7159.jpg

Mine aren't the prettiest thing right now, but you can add a matte to the front to cover it up, or leave as is.