 In a 1988 letter, reference is made to the existence of 3850 pages, copies of which have been sent to several individuals, representing perhaps up to 160,000 pages of total Ummo documents.The true identity of the authors of those reports remains unknown.Dash notes that "few ufologists outside Spain took Ummoism seriously—the photographic evidence was highly suspect, and, while the Ummite letters were more sophisticated than most contactee communication, there was nothing in them that could not have originated on Earth."