I grew up before the Internet. When we had a research paper assigned at school, kids went to the library to look for information in books and the reference section -- and usually had a set of encyclopedias at home.
In my family, we had The World Book Encyclopedia. I used it often for school reports, and sometimes just read at random about interesting topics like animals or dogs. I remember there were some pages that had acetate layers, so you could look, for instance, at parts of the body one layer at a time. My Mom still has this encyclopedia set at her home, and I still enjoy looking at it.
We also got a yearly annual from World Book, with updates on current events and new information from the previous year.
World Book is still around and published in both print edition and online resource -- visit World Book here. I found it heartening to know that this beloved encyclopedia is still around!
Did you have an encyclopedia set when you were growing up? What do you remember about it? I'd love to hear from you in the comments, below.