This book is a reprinting of the original Score periodicals that are held by the Sackner Archive and is stored adjacent to them.Douglas Kahn wriets in the preface, "Source: music of the avant garde was a beautifully produced publication of new music scores, essays by composers and artists, statements, interviews, artworks, sound and concrete poems, photo essays, circuit diagrams, instrument designs, event reports, documents, and LP recordings. It appeared in eleven large-format issues from 1967 to1973, semiannually in runs of two thousand copies, and became internationally known among all those interested in new music. and related arts at the time. It is now an invaluable historical document - from an exciting period in the arts, technology, culture, and politics - for what is loosely called experimental music, new music, electronic music, and related developments in poetry, visual arts, and intermedia.." -- Source of annotation: Marvin or Ruth Sackner.