A museum has on display a 2000 year old Roman fresco and a couple of mosaic pavements. They were excavated nearby in the 1970s and belong to the local authority that owns the museum. Anyone can go into the museum and is allowed to take photographs of them. A man walks in and takes photographs of them because he wants to include the photographs in a children's history book - like these:
http://www.hometownwo...uk/index.php?page=381 . He will credit the museum and do the correct research for the book.
I know that copyright of the photographs will belong to the photographer, but does anyone hold copyright over the mosaics and the fresco?