Software which dials specified telephone numbers and delivers an automated telephone message was tested as an alternative to postcard reminders in the Pennsylvania county estimates survey. The recorded telephone message was automatically dialed and delivered to two randomly selected subsamples of operations selected for the survey. One subsample received the message following the first mailing of the questionnaire. A second subsample received the message immediately preceding the second mailing of the questionnaire. A third random sample received the same reminder message on a traditional postcard reminder delivered via US Postal Service mail. Response rates for each of these groups were compared to a control group which received no reminder. All three reminder groups had higher response rates than the control group, with the postcard reminder increasing response the most.