On This Day for 6/20 - Howlin' Wolf is born, the Casket Letters are discovered, and more

Don't miss an issue of On This Day! Simply add [customerservice@eb.com]( to your address book. On This Day June 20 Discover the Fastest Route to Britannica - [EB.com]( Biography of the Day [Howlin' Wolf (Chester Burnett), 1964]( [Howlin' Wolf]( American [blues]( singer and composer [Howlin' Wolf]( of the principal exponents of the urban blues style of Chicago, who was noted for his brooding lyrics and his earthy, aggressive stage presence—was born on this day in 1910. Who else was born today? Find out with the newest version of [our best-selling software! >>]( On This Day [Mary, Queen of Scots.]( 1567: Casket Letters found The [Casket Letters]( directly implicated [Mary, Queen of Scots]( in a plot with [James Hepburn, 4th earl of Bothwell]( to murder Mary's husband, [Henry Stewart, Lord Darnley]( said to have been discovered on this day in 1567. Explore more key moments in history for just $39.95 [Learn more >>]( [Sign up now]( for our monthly newsletter, showcasing articles hand-picked by our editors! More Events On This Day 2002: In Atkins v. Virginia, the [U.S. Supreme Court]( ruled that the imposition of the [death penalty]( in cases involving [intellectually disabled]( defendants violated the [Eighth Amendment]( protection against cruel and unusual punishment. 1992: [Paraguay]( new constitution went into effect in [Paraguay]( signaling the end of military rule established in the 1950s by [Alfredo Stroessner](. 1967: [Nicole Kidman]( actress [Nicole Kidman]( was known for her considerable range and versatility, as well as for her glamorous looks and cool demeanour—was born in Hawaii. 1928: American jazz musician [Eric Dolphy]( was born in Los Angeles. 1905: [Lillian Hellman.]( playwright and screenwriter [Lillian Hellman]( was born in New Orleans, Louisiana. 1887: German [Dada]( artist and poet [Kurt Schwitters]( was born in Hannover. 1861: [Sir Frederick Gowland Hopkins]( biochemist [Sir Frederick Gowland Hopkins]( who won a share of the 1929 [Nobel Prize]( for Physiology or Medicine for his discovery of [vitamins]( was born in Eastbourne, East Sussex. 1789: Locked out of their meeting hall at [Versailles]( the deputies of the Third Estate in France congregated on a nearby tennis court and took an oath not to separate until a written constitution had been established—the [Tennis Court Oath](. A Great Gift Idea from The Britannica Store [1768 Encyclopaedia Britannica Replica Set]( The handsome three-volume reproduction is so beautifully executed that it's almost indistinguishable from the 1768 original, right down to the natural age spots and watermarks on the pages. A must-have for collectors of history or vintage books, the set lends an unmistakable air of prestige to any home or office. [Get yours today]( Our Best-Selling Software! the world's most trusted and authoritative information for [only $39.95](. Britannica on Facebook a fan]( on Facebook and get updated Britannica content in your news feed! Britannica on Twitter @Britannica]( and enjoy daily tweets relating to the news stories of the day! [Home]( [Advocacy for Animals]( [Newsletters]( [Feedback]( [Help]( Please note that if you do not open or click on any On This Day email during any consecutive 30-day period, we reserve the right to remove your address from the active mailing list. This policy does not apply to RSS feeds. Share: Was this message forwarded to you? [Click here]( and we'll start sending you the On This Day newsletters. This message has been sent to {EMAIL}. To unsubscribe [click here](. To unsubscribe by postal mail, send your request to: Encyclopaedia Britannica 325 N. LaSalle St. - Suite 200 Chicago, IL 60654 US ATTN: Customer Service - On This Day © 2017 Encyclopaedia Britannica, Inc. [Privacy Policy]( — [Help](