Federal Man to the Rescue!
The University of Nebraska has a swell archive of vintage comic books published by the U.S. Government. The files are in easily downloaded pdf format, so you can look at them nice and big. How about I’ve Got Wings! (excerpt above), or Earthquake Preparedness for Children with Yogi Bear? Perhaps those who are feeling really adventuresome could try the unheralded 1978 opus Preventive Maintenance of Lead-Acid Batteries.