Do NOT do this. Brooks is a business that is alive and well. They will NOT look kindly on your use of their trademark. I guarantee that.
I third this emphatically. While a business such as VeloCals walks a fine line. Many of the images they reproduce are from firms no longer in business, or not interested in keeping up trademark protection from an early graphic, or even not interested in offering that sort of support for their earlier products.
Brooks, however, has refurbished their own saddles in the past, might be willing to do so in the near future, and in any case owns and uses the same trademark they have been identified with for a century. I'd be very careful about using their logo or trademarked material. It's not worth losing one's house over.
Their lawyers are as hungry as those anywhere else....
Besides which, as a fine instrument maker, I'd be *mighty cheesed* if someone used my logo and identity to represent their work.
Corey K