Measurements of [Sigma]PFD made with
Ozalid paper meters indicated that the light environment at these sites had not changed since 1990.
The Elliott collection contains more than 350
Ozalid and onionskin scores and sets of ensemble parts.
A stack of photosensitive
Ozalid paper was exposed for daily periods, and the amount of light energy received was estimated from the number of layers of paper that were bleached after dry development with ammonia vapor.
Ozalid copy of copyist's manuscript full score dated July 13, 1947, and including the changes indicated in Items 2 and 3.
Smith's first initiatives became known as the Black Line Print project, under which copyists working with india ink on
ozalid master sheets produced scores of compositions--such as eighteenth-century trio sonatas--which had previously only been printed as parts; in some cases, works which had been published as scores had parts produced to facilitate performance.
(American composers and musicologists referred to these as "
ozalid proofs"; Bartok usually called these scores "Lichtpausen," borrowing the term used by his Viennese publisher for photostatic reproductions.) Many of the works from his later years--the Fifth String Quartet, for example, and the Sonata for Solo Violin--first found their way to performers in such "facsimile" form.