Ramona Fradon (born October 2, 1926) is an American comics artist known for her work on Aquaman and Brenda Starr and for co-creating the superhero Metamorpho.
Biography on Wikipedia: https://en.wikipedia.org/wiki/Ramona_Fradon

Wonder Woman pin-up page by Ramona Fradon
2020 / Wonder Woman #750 Anniversary Celebration Issue / Book 6-5/8″x10-13/16″ / DC Comics

Ramona Fradon on Artnet: http://www.artnet.com/artists/ramona-fradon/

Further reading:
https://www.lambiek.net/artists/f/fradon_ramona.htm
http://www.sequentialtart.com/archive/may00/fradon.shtml
https://neotextcorp.com/culture/the-elemental-woman-a-tribute-to-ramona-fradon/