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TIL The Boston Light is the only manned lighthouse in the United States

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l5MB TIL that Cracker Jack, Cream of Wheat, Juicy Fruit, Quaker Oats, Shredded Wheat, Pabst Blue Ribbon, elongated coins, spray paint, Phosphorescent lamps, and a zipper precursor were all introduced at the Columbian Expo in Chicago in 1893
gMWLW TIL that Breaking bad final episode titled "Felina", in addition to being anagram of "finale", also stands for Iron (Fe), Lithium (Li) and Natrium (Na) corresponding to blood, meth and tears
J84v TIL the only US President to have a PhD is Woodrow Wilson
v0b7 TIL that a “band-aid” for “people of color” was marketed in the late 90s and early 00s, but failed to gain traction, partly due to retailers insistence on only featuring the item in the “ethnic sections” rather than in-line with its “white” counterparts.
JY9X4 TIL that the Karamanid dynasty, a Muslim beylik (principality) that existed in Anatolia (present-day Turkey) from 1250-1487, used a blue Star of David on a white background for their flag