I love pictures of old machines in general, and mechanical computing devices in particular. Completely useless to us now, we can still admire them for their physical form. These photos of the Zuse Z1 (a reconstruction) were taken by my friend Gordon Hicks at the Deutches Technikmuseum Berlin. Click the thumbnails for more, full-size, photos.
Museum of American History in Wash D.C. has acoustic couplers and thermal terminals — stuff I used in the 80’s. — quite shocking to see it in a museum.