Field Trials: Trials and Tribulations of a Field Visit
http://www.stcsig.org/usability/newsletter/9810-fieldvisit.html

Gunn, Robi
Usability Interface
1998

Abstract:

I dutifully and eagerly prepared myself for the visit. I read books and STC articles on field visits and questionnaires. I was on a quest, and dangerously close to realizing a dream. At last, I would be able to define my audience, and gage the usability of the online help and hard copy manual. I would finally get the answers to my questions directly from a group of users.