A Brooklands Portfolio Ser.: Mercedes-Benz 190SL, 300SL, 300SLR by R. Clarke is a 350-page trade paperback book published by Brooklands Books in 2011. It is a reference book that covers the automotive industry, specifically the Mercedes-Benz models 190SL, 300SL, and 300SLR. The book is authored by various British writers intent contemporaneous with the car’s release and is written in English. It is a general guide for buyers and enthusiasts of vintage cars.