Tale of Peter Rabbit, as well as spin-off merchandise, have been made available over the decades. Variant versions include "pop-ups, toy theatres, and lift-the-flap books". By 1998, modern technology had made available "videos, audio cassette, a CD-ROM, a computer program, and Internet sites", as described by Margaret Mackey writing in The case of Peter Rabbit: changing conditions of literature for children. She continues: "Warne and their collaborators and competitors have produced a large collection of activity books and a monthly educational magazine". A plethora of other Peter Rabbit related merchandise exists, and "toy shops in the United States and Britain have whole sections of [the] store specially signposted and earmarked exclusively for Potter-related toys and merchandise". Unauthorized copying of The Tale of Peter Rabbit has flourished over the decades, including products only loosely associated with the original. In 1916, American Louise A. Field cashed in on the popularity by writing books such as Peter Rabbit Goes to School and Peter Rabbit and His Ma, the illustrations of which showed him in his distinctive blue jacket. In an animated movie by Golden Films, The New Adventures of Peter Rabbit, "Peter is given buck teeth, an American accent and a fourth sister Hopsy." Another video "retelling of the tale casts Peter as a Christian preacher singing songs about God and Jesus." Literary praise Writing in Storyteller: The Classic that Heralded America's Storytelling Revival, in discussing the difference between stories that lend themselves well to telling and stories that lend themselves well to reading, Ramon Ross explains Peter Rabbit is a story created for reading. He believes Potter created a good mix of suspense and tension, intermixed with lulls in the action. He goes on to write that the writing style—"the economy of words, the crisp writing"—lends itself well to a young audience. Lear writes that Potter "had in fact created a new form of animal fable: one in which anthropomorphic animals behave as real animals with true animal instincts", and a form of fable with anatomically correct illustrations drawn by a scientifically minded artist. She further states Peter Rabbit's nature is familiar to rabbit enthusiasts "and endorsed by those who are not ... because her portrayal speaks to some universal understanding of rabbity behaviour." She describes the tale as a "perfect marriage of word and image" and "a triumph of fantasy and fact". According to Stuart Jeffries, "...psychoanalytic critiques of her work