Uncertain creatorship, 1G6

notes on, 5B7.2

Uncertain place of publication, 2C10

Uncertain publisher, 2D8

Unknown date of execution of unpublished material, 2H5

Unknown place of publication, 2C12

Unknown publisher, 2D9

Unknown source of material, 5B26

Unnamed creator, 1G5, 1G6, 1G10

Unpublished description

as source of information, 0B1.1(c)

notes on, 5B18

See also:

Index to Graphic Materials