Published at the height of the '80s OVA boom, Movic's Creations series of books presented a no-nonsense look at the design materials used in the production of various OVAs. Each book consists of a single color page while the rest of the book is production settei (lineart that defines the characters, mecha, and settings of an anime). While you won't find screenshots or written material (aside from designer notes on the settei), the lineart included is generally much larger than you'd find in comparable books and the series covered more obscure OVAs. 

Salamander Creations features settei from Salamander, a three-part OVA released between 1987 and 1989. Based on the classic Konami shooting game series of the same name, it's best remembered for some classic Haruhiko Mikimoto [Macross, Gundam 0080] character designs. Inside you'll find a lot of character lineart by Mikimoto himself, plus lineart for the various spacecraft and settings used throughout the OVA. There weren't many (if any!) other books published that covered this obscure OVA series, so if you're a fan it's worth picking up.