Chris Foss is an amazing sci-fi concept artist from the 'golden era'. His visions of space have become the subconscious imagery of an entire generation. And he's still doing great work, having done some of the amazing spaceship concepts for Guardians of the Galaxy!
His work is a huge inspiration to Project: EMPIRE, and the combination of animal-like forms and technology a a go-to for when we're crafting our our own ship.
We highly recommend checking it out and buying his art and books, too.