Fallout: New Vegas skill magazines

General information
Skill magazines temporarily raise the corresponding skill by ten points (twenty with Comprehension), but wear off after a minute (three with Retention). There are a total of 213 skill magazines placed in permanent locations; however, certain merchants sell them, providing a limitless source. Also, the magazine vending machines on The Strip also provide you with random magazines from time to time. Similar to chems, the effects of skill magazines do not stack; using two copies of Meeting People will only provide the bonus of one copy, wasting the second.

Random locations
These magazines can be found in containers such as mailboxes and the 12 red magazine boxes on the Strip. Some of these containers will be replenished over time.