the Professor. Doctor Grimes is also a musician who plays the piccolo; he and Professor Bullfinch occasionally play duets. Tall and lanky, he is in many ways a contrast to his friend Bullfinch. Books in the series Danny Dunn and the Anti-Gravity Paint (1956) Danny Dunn on a Desert Island (1957) Danny Dunn and the Homework Machine (1958) (Irene introduced) Danny Dunn and the Weather Machine (1959) Danny Dunn on the Ocean Floor (1960) Danny Dunn and the Fossil Cave (1961) Danny Dunn and the Heat Ray (1962) Danny Dunn, Time Traveler (1963) Danny Dunn and the Automatic House (1965) Danny Dunn and the Voice from Space (1967) Danny Dunn and the Smallifying Machine (1969) Danny Dunn and the Swamp Monster (1971) Danny Dunn, Invisible Boy (1974) Danny Dunn Scientific Detective (1976) Danny Dunn and the Universal Glue (1977) Albums Danny Dunn and the Homework Machine was turned into a musical children's album on Golden Records (Golden LP 239), with music composed by Julie Mandel. Reception Floyd C. Gale of Galaxy Science Fiction said in 1961 that "Danny's adventures are always based on a solid science foundation, once the authors' usually wild main premise is digested". See also Tom Swift References Book series introduced in 1956 Characters in American novels of the 20th century Juvenile series Novel series Science fiction characters Series of children's books