Anonymous work
Anonymous works are works, such as art or literature, that have an anonymous, undisclosed, or unknown creator or author. In the case of very old works, the author's name may simply be lost over the course of history and time. There are a number of reasons anonymous works arise. Provided by Wikipedia
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40