Brilliant cites. Usually, when we speak about Siddhanta stating that Shreemati MahaLakshmi-Devi is non-distinct from Bhagavan Shree Vishnu, we cite "Shree Vishnu-Purana".
The following cites are from "Shree Jayakhya-Samhita" and "Shree Agni-Purana", the excerpt is from "Shree Kamala-Kalpa-Taru" - The Grantha about Shree Kamala-Vidya (10th MahaVidya).
Click on the picture to enlarge, also on pin - http://pin.it/rHnGHRH
Vishnudut1926, september 2016, Moscow
