Fragment of Plymouth Rock with painted description, 1830.
If you had forgotten to bring your hammer on an excursion to Plymouth Rock in the early 1800s, no worries: a hammer was provided at the monument for souvenir seekers.
This practice continued until the end of the 19th century, when what remained of the rock was fenced off from visitors (and their hammers).
Source: O Say Can You See? (National Museum of American History Blog)