Thank you for this gorgeously sparkling round-up of links! I really liked the idea of the pedal-power blimp. Yes, very steam-punk - scenes of bright young things heading by blimp to Wimbledon for an alt 1890s afternoon of tennis, say. :)
Loved the marginalia of the Rutland Psalter, too, and also the glimpse of lovely late-nineteenth-century high aesthetics and privilege which let William Morris call for it on his death-bed -(so much more admirable than calling fora veal pie)!
and all the rest, all the way down to walrus ivory. Wonderful! (I like old ivory very much, myself, and have gone to the extent of writing one museum-piece into a story because I liked it so much.)