I remember that Borland Paradox or a book about it had two ducks on the cover, but can't find proof right now.

clacke@libranet.de ❌ at 2017-07-05T00:42:27Z

Paradox Development did!

http://www.closinglogos.com/page/Paradox+Development

clacke@libranet.de ❌ at 2017-07-05T00:45:46Z