spaceman © dave calder 1995 spaceman original publication by hilltop press, isbn 0 905262 093 theorems of violence © dave calder 1984 theorems of violence original publication by otherpublications, isbn 0 946057 036 the umbellas © dave calder 1985 the umbrellas original publication by otherpublications, isbn 0 946057 044 april and xii © dave calder 1973 april some collaborations with musicians etc- some recordings etc-