Upanishads author(s)

works

[ note: the principle Upanishads were likely authored much earlier ]

title	↓ year	authors
the_upanishads_breath_of_the_eternal	-3100	upanishads_author, swami_prabhavananda
the_principal_upanishads	-3100	upanishads_author, sarvepalli_radhakrishnan
the_ten_principal_upanishads	-3100	upanishads_author

Rishi's: “The Vedic texts assert that they were skillfully created by Rishis (sages), after inspired creativity, just as a carpenter builds a chariot.” *

title	matches
the principal upanishads	1
the ten principal upanishads	1
the upanishads breath of the eternal	1
ancient india	1
human life	2