Interesting. When I was a child, we lived in an old cottage with single-glazed windows and no central heating. In winter, we often had frost patterns of sycamore leaves on the windows. We had sycamore trees in the field across from the house, but I can remember being confused and wondering if someone was pressing the leaves to the window during the night.
There's more to it than that. Frost patterns on windows really do resemble real plants such as ferns because both are examples of Iterated Function Systems (see https://en.wikipedia.org/wiki/Iterated_function_system).
You'd think a website about public domain PDFs would be able to load the PDFs, but no. Both Chrome and Safari greet me with multiple load errors, probably because the scan is being embedded in an IFRAME and loading as a full-fledged HTML page from another domain. Oh, but it manages a pop-up asking me to subscribe to their newsletter.
Just use an <img>, why does everything have to be 10 layers of javascript and iframes? If it's a PDF, then just link it. That's what the 'H' in HTML is for.
