Garrison Keillor included these birthday notes today in his daily “Writer’s Almanac,” which is online and free.

It was on this day in 1818 that Mary Shelley’s novel Frankenstein was published (books by this author).

Two years before she had spent the summer in a cabin on Lake Geneva with her lover, Percy Bysshe Shelley, her sister Claire, and Claire’s lover, the poet Lord Byron. It rained a lot that summer, and one night, Byron suggested they all write ghost stories. At first Mary had trouble coming up with a story, but while lying in bed, reported having a waking nightmare, seeing a vision of a man reanimating a creature. She wrote: “I saw the pale student of unhallowed arts kneeling beside the thing he had put together. I saw the hideous phantasm of a man stretched out, and then, on the working of some powerful engine, show signs of life, and stir with an uneasy, half vital motion.” So she set to work on Frankenstein.

It’s the birthday of children’s author and illustrator Ezra Jack Keats (books by this author), born Jacob Ezra Katz in Brooklyn (1916). The son of impoverished Jewish immigrants from Warsaw, he wanted to be an artist, and that worried his family — but he couldn’t afford art school, so he got a job painting murals for the Works Progress Administration, and designed army camouflage during World War II.

The first book he wrote and illustrated on his own was The Snowy Day (1962), done all in collage, about a young black boy named Peter playing in his neighborhood after a new snowfall. It was one of the first children’s books to feature a black character. He went on to illustrate more than 80 children’s books, and to write and illustrate more than 20 books.

He said, “I love city life. All the beauty that other people see in country life, I find taking walks and seeing the multitudes of people.”