Delta Zeta was Closed by National as of February 1, 1958 due to low numbers. With only 5 active sisters and 7 pledges returning for the Spring Semester of 1958, it was considered too heavy a burden to keep the house going. Decision communicated to the school and Panhellenic by Mrs. Fred T. Kelleway the National Alumnae Director.
Page 2 of the January 24, 1958 Evergreen. Article titled "Delta Zeta will close door soon"
http://content.libraries.wsu.edu/cdm...id/67374/rec/3
(And yes, I'm also surprised I found this much information)