Filtering by: File Format image/tiff Remove constraint File Format: image/tiff Place (Topic) united states Remove constraint Place (Topic): united states Subject extraterrestiral beings Remove constraint Subject: extraterrestiral beings Time Period (Topic) 1980s (1980-1989) Remove constraint Time Period (Topic): 1980s (1980-1989) Time Period (Topic) 1990s (1990-1999) Remove constraint Time Period (Topic): 1990s (1990-1999)