A study was conducted at Macomb Community College (MCC), in Warren, Michigan, to determine whether respondents to studies would be as likely to include their return addresses on business reply envelopes if there were no lines designating the return address's proper placement. From October 25 through November 18, 1993, 23 mailings were conducted using return envelopes with lines for return addresses and envelopes without lines. Envelopes were bundled by the date they were received and counted into four categories: lined with addresses, lined without addresses, unlined with addresses, unlined without addresses. Of the 1,646 lined and unlined envelopes received during the 16 day study period, a total of 56% (n=919) had return addresses. The lined reply envelopes produced a return address rate of 71% (898 out of 1,267 lined envelopes), while only 5% (21 out of 369) of unlined envelopes had return addresses. Of the 919 envelopes with return addresses, 24% (n=218) were changes of the address that appeared on the survey label. Because it is the ancillary function of the Research and Evaluation department to keep MCC's student database current, the conclusion was reached that business return envelopes should contain lines for return addresses. By changing addresses based on return address information, MCC saves time and money by not mailing to incorrect addresses. (MAB)