The Grégoire Lake In-Situ Steam Pilot (GLISP) was the first steam foam flood performed in Athabasca. The recovery process developed at GLISP used inherent reservoir characteristics to advantage. Inter-well communication was established in an upper zone of low oil saturation. Steam diversion using in-situ foam was then used to successfully mitigate steam override to that zone. Foam injection improved oil production by as much as 100%. Additional testing was performed to optimize surfactant and steam injection rates. This paper presents results of the steam foam testing, and is a case history follow-up of SPE 19690. GLISP production, injection and reservoir temperature profiles are used to outline the results of the steam foam diversion process.