Vintage hardcover Voyage to the Bottom of the Sea 1965

Hardcover novel from Whitman publishing, published in 1965, based on the television show Voyage to the Bottom of the Sea (1964-1968). Binding is intact but starting to become a bit fragile from age. Has wear and creasing along the edges but both cover images have minimal wear. Has been signed by a previous owner, along with some stamps (I think they're Thundercats?) visible in photo 4, with one stamp having bled through the page visible in photo 5. Pick up in Strathern, I do not deliver.