This PDF is a brief work on the later creeds, basically brief statements on the Third Council of Constantinople, the statement of faith, the Image Controversy, the synod of Constantinople, and the council of Nicaea.

Third Council of Constantinople (681 AD, Sixth Ecumenical)
The Statement of Faith of the Third Council of Constantinople (681 AD, Sixth Ecumenical)
The Image Controversy (the Iconoclasts)
The Synod of Constantinople (Hiera, 753 AD)
Council of Nicaea (7th Ecumenical,787 AD)