The Varieties and Complexities of American Handwriting and Penmanship: Library Hand

Thomas Edison's Early Vertical Style

Here we see a style that Edison taught himself, through trial and error. After abandoning the writing style of the time, he experimented until he created a fast and legible style suited for copying material as a telegraph clerk.

http://davidkaminski.org/wiki/Thomas_Alva_Edison,_Letter_to_John_Clark_Van_Duzer,_page_1,_1868