I like Hercules Brabazon Brabazon’s works on toned paper. I am starting to do more on toned paper (Canson Mi-Teintes) hoping that’s it’s a good way to get quick impressions of a scene. These sketches make sense in front of good vistas. Maybe not so great for close up studies.
Here’s a quick study of his sketch of Salamaca Cathedral in Spain. I got a few things wrong because I rushed, trying to think of the energy in it at the expense of the accurate placement of some shapes. Not a big deal. I learned from it. Get the shapes right then be quick. I think he used a dryer bush at times than I did. I will do more of these to refine the technique.