Milton Dank has written:

'Albert Einstein' -- subject(s): Juvenile literature, Physicists, 1879-1955, Biography

Anne H. Lundin has written:

'The critical reception of Kate Greenaway in England and America, 1879-1901'

'Teaching children's literature' -- subject(s): Study and teaching, Children's literature

'Constructing the canon of children's literature' -- subject(s): Theory, History and criticism, Books and reading, Children's literature, American, Canon (Literature), Children's literature, English, Children

It was the 18th of October in the year of 1879

Before 1879. 1879 was when it was invented

1921 - 1879 = 42