1990 Official Nintendo Power Volume SG1 NP 13 SUPER MARIO BROS. 3 STRATEGY GUIDE

1990 Official Nintendo Power Volume SG1 NP 13 SUPER MARIO BROS. 3 STRATEGY GUIDE.

The "1990 Official Nintendo Power Volume SG1 NP 13 SUPER MARIO BROS. 3" is not a standard issue of the monthly magazine, but a special strategy guide. Here's a breakdown of what that means:
​SG1/NP13: This designation indicates that it is a Strategy Guide, the first one (SG1), and was released in conjunction with Volume 13 of the regular Nintendo Power magazine.
​Release Date: The Super Mario Bros. 3 strategy guide was published in June 1990.
​Content: This wasn't a standard issue with reviews and news. Instead, it was an extensive, 84-page guide dedicated entirely to the game Super Mario Bros. 3. It provided detailed information on every world, power-ups, enemies, and secrets.
​Regular Magazine Issues: While this was a special guide, Super Mario Bros. 3 was also featured on the cover of the standard Nintendo Power Volume 11 from March/April 1990.