Online Public Access Catalogues. - Charles R. Hildreth (Essen Symposium, 1985)

The U.S. National Standard Command Language for Online Interactive Information Retrieval: A Status Report. - Charles R. Hildreth (Essen Symposium, 1986)

CD-ROM Public Access Library Catalogues: Uses, Advantages, Problems. - Charles R. Hildreth (Essen Symposium, 1986)

Online Library Catalog Systems: An Analysis of User Errors. - Beverly Janosky; Philip J. Smith; Charles R. Hildreth (Int. J. Man Mach. Stud., 1986)

Preserving What We Really Want to Access, the Message, Not the Medium: Challenges and Opportunities in the Digital Age. - Charles R. Hildreth (Essen Symposium, 1995)

Review - Enhancing Access to Information: Designing Catalogs for the 21st Century. - Charles R. Hildreth (Inf. Process. Manag., 1997)

Accounting for users' inflated assessments of on-line catalogue search performance and usefulness: an experimental study. - Charles R. Hildreth (Inf. Res., 2001)