The blueprints for the Eiffel Tower in Paris. Apparently, they are reproductions from a book titled The 300 Meter Tower, written by Eiffel himself, and published by Lemercier in 1900. I wasn’t able to find an electronic copy of the book (it’s likely out of copyright), but I did come across another book about the tower published in 1889.
Ken Garland’s lectures at Reading were some of my favourites during the time I spent there, particularly his passion for Harry Beck and the London Underground. I don’t really remember him mentioning Beck’s connection to the Paris Metro, probably because there was only limited class time.