Libraries at 52 U.S. colleges and universities offering engineering programs were surveyed by mail to determine how they handled the engineering information needs of off-campus, nonacademic users. Twenty-five provided usable responses. For this sample, 60.4% of the estimated service is to companies, 18.8% to consultants/entrepreneurs/inventors, 13.2% to government agencies, and 7.6% to "others." Service to technical companies exceeds that to legal companies by a ratio of 13.5 to 1. State government agencies receive more service than federal government agencies by a ratio of 1.4 to 1. Most service is provided within the urban area of the particular library. Reference accounts for 33% of services; circulation for 27.4%; interlibrary loan for 19.8%; online searching for 16.4%; document delivery for 2.2%; and "other" for 1.2%. Fees charged vary widely among libraries. Circulation fees are charged by 54.4% of the responding libraries, with no allowance for level of use. Five libraries (22% of the respondents) charge for any type of reference service. Nine appended "figures" include the survey instrument and tables and graphs displaying the survey results. (Contains 15 references.) (Author/SD)