Academic
A study by the Joint Libraries Committee on Fair Use in Photocopying on single-copy photocopy requests (not necessarily ILL requests) in 10 libraries (3 governmental, 3 public, and 4 university) in 1959, with more detailed analysis of photocopy requests in NYPL, University of Chicago, and Princeton University, showed thatin meeting research demand participating libraries neither could nor did adjust their duplicating services to the complexities of copyright law and status. (Source)
Ibid…. showed thatphotocopy demand was widely dispersed, with no correlation with copyright status or the advertising policies of publishers. (Source)
Ibid…. showed thatin 3 major research libraries the following pattern of photocopy requests by age of material prevailed:
PUBLICATION DATE NYPL PRINCETON CHICAGO
20th century 91.0% 83.7% 95.1%
within last 10 years 57.9% 47.4% 37.0%
within last 1 year 13.3% 2.5% 6.0% (Source)
Ibid…. showed thatin 3 major research libraries the following pattern of requests by format of material prevailed:
TYPE OF MATERIAL NYPL PRINCETON CHICAGO
books 5.4% 25.8% 17.0%
periodicals 92.1 49.8 71.9
maps 0.2 5.1 —
music text 0.05 — —
music notation 0.3 — —
manuscripts 0.3 14.2 —
prints, pictures
& illustrations 0.55 5.1 —
A 1-year study (academic year 1969-70) of the 7,126 interlibrary loan transactions among RAILS members (11 state-assisted university libraries in Ohio) showed thatapproximately 71.3% of the ILL requests were for photocopies (almost exclusively journal articles) and 28.7% were for monographs. (Source)
A study during fiscal year 1971-72 at California State University, Fullerton, involving interlibrary loan requests generated by CSUF patrons for 527 books and 697 periodicals not in the CSUF collection, showed that73% of the journal titles were requested once, 14% of the titles twice, 6% of the titles 3 times, 3% of the titles 4 times, and 4% of the titles 5 or more times. (Source)
A review of ILL photocopy requests filled by other libraries for Millikan Library at the California Institute of Technology during the calendar year 1978 showed that87.3% of the 865 requests required no more than 5 photocopies per title. (CONTU guidelines state that libraries should not request more than 5 photocopies per title per year for articles published within 5 years of the reprinting date.) (Source)
Public
A study by the Joint Libraries Committee on Fair Use in Photocopying on single-copy photocopy requests in 10 libraries (3 governmental, 3 public, and 4 university) in 1959, with more detailed analysis of photocopy requests (not necessarily ILL requests) in NYPL, University of Chicago, and Princeton University, showed thatin meeting research demand participating libraries neither could nor did adjust their duplicating services to the complexities of copyright law and status. (Source)
Ibid…. showed thatin 3 major research libraries the following pattern of photocopy requests by age of material prevailed:
PUBLICATION DATE NYPL PRINCETON CHICAGO
20th century 91.0% 83.7% 95.1%
within last 10 years 57.9% 47.4% 37.0%
within last 1 year 13.3% 2.5% 6.0% (Source)
Ibid…. showed thatphotocopy demand is widely dispersed, with no correlation with copyright status or the advertising policies of publishers. (Source)
Ibid…. showed thatin 3 major research libraries the following pattern of photocopy requests by format of material prevailed:
TYPE OF MATERIAL NYPL PRINCETON CHICAGO
books 5.4% 25.8% 17.0%
periodicals 92.1 49.8 71.9
maps 0.2 5.1 —
music text 0.05 — —
music notation 0.3 — —
manuscripts 0.3 14.2 —
prints, pictures & illustrations 0.55 5.1 —
