It seems that the Yellow Kid wasn´t the first comic ever published in U.S. :D

Proto-comic books and the Platinum Age

The development of the modern American comic book happened in stages. Publishers had collected comic strips in hardcover book form as early as 1833, with The Adventures of Obadiah Oldbuck, which appeared in New York in 1842, as the first example published in English.The G. W. Dillingham Company published the first known proto-comic-book magazine in the U.S., The Yellow Kid in McFadden's Flats, in 1897. It reprinted material – primarily the October 18, 1896 to January 10, 1897 sequence titled "McFadden's Row of Flats" – from cartoonist Richard F. Outcault's newspaper  comic strip Hogan's Alley, starring a character called the Yellow Kid. The 196-page, square-bound, black-and-white publication, which also includes introductory text by E. W. Townsend, measured 5x7 inches and sold for 50 cents. The neologism "comic book" appears on the back cover. 

History of Jazz -Part I. There´s so much material that I'll try to divide it in three parts. :)

Jazz is a music genre that originated at the beginning of the 20th century in African American communities in the Southern United States from a confluence of African and European music traditions. From its early development until the present, jazz has incorporated music from 19th and 20th century American popular music.  Its West African pedigree is evident in its use of blue notes, improvisation, polyrhythms, syncopation, and the swung note. However, Art Blakey has been quoted as saying, "No America, no jazz. I’ve seen people try to connect it to other countries, for instance to Africa, but it doesn’t have a damn thing to do with Africa".  The word "jazz" began as a West Coast slang term of uncertain derivation and was first used to refer to music in Chicago in about 1915.