Penguin Essentials (also called Essential Penguins) refers to two series of books published by Penguin Books in the UK.
The first series began in 1998, and the second in 2011.
[1][2] For both series, the classic books were released in smaller A-format size; the covers were redesigned by contemporary artists to appeal to a new generation of readers.
[3] Many titles appeared in both series.
[4]