Maybe I have been missing them but I've read a few articles where I've wanted to know what issue of the magazine they came out of. For example the "Diesel Injectables - How-It-Works", maybe putting what month/year they came from would be a good improvement.  

We used to have the issue date appear with the story. It's on-again, off-again. A little insider trick: If you want to figure out the issue date, look at the four-digit code followed by "dp." There are some exceptions, but it usually goes year, month. Basically, 0710 would be October 2007. 0802 would be February 2008. Hope this helps.