
[$49.95, National Geographic]
The 1935 World Map is a classic, instantly recognizable. It shows the viewer both eastern and western hemispheres simultaneously, which I, personally, care nothing about, but your little brother with the collection of WWII-style model airplanes might.
After the jump, some additional under-$50 gifts for the history buff in your life.

[$35.99, A&E Shop]
This DVD collection includes 10 one-hour documentaries on 10 individual days that "triggered change in America."

[$29, Smithsonian]
For a ridiculously low price, you can buy a Smithsonian membership for your loved one, which includes shopping and dining discounts, a Smithsonian magazine subscription, and more.

[$29.70, Amazon]
The Atlas of World History contains more than 450 color maps illustrating major themes and events of history. Which is sorta cool.

[$36, Etsy]
Give your stuck-in-the-past sweetie something that perfectly melds the historical and modern worlds, with a piece of steampunk or antique jewelry. Etsy is absolutely filthy with some choice picks.
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Related: Gifts Under $25 for the History Buff, Gifts Under $50 for Foodies, Gifts Under $50 for Giant Nerds, Gifts Under $50 for Jetsetters, Gifts Under $50 for Stylistas