Question

Name all the Vedic tests which provide information about early Vedic period

Answer 1

The corpus of Vedic Sanskrit textsincludes: The Samhitas (Sanskrit saṃhitā, "collection"), are collections of metric texts ("mantras"). There are four "Vedic" Samhitas: the Rig-Veda, Sama-Veda, Yajur-Veda, and Atharva-Veda, most of which are available in several recensions (śākhā)

Answer 2

Ramayana and Gita.
But it is also in Samveda,Yajuveda,Rigveda.