I went through the plans and I didn't find one that matched the Iantha Depot. would you know what plan this depot was built from? http://www.missouridepots.com/ianthaslsf58.htm
The Iantha depot was built during 1880 by the "Memphis Road", and so it would not appear as one of the Frisco Standard plans. The Iantha depot was 40'-2" x 22'-2". The waiting room was 11'-6 x 21'-0, the office was 7'-11" x 23'-8", and the freight and baggage room was 18'-7" x 21'-0. The ceiling in the office and the waiting room was 10'-10" and the ceiling height in the baggage room was 11'-4".
I guess I didn't stop to think that the frisco used the depot built by the KCFS&M. I figured they would have torn it down and built one to their standards.