How 'bout this:

Melody Maker Magazine (circa 1971):
Badfinger and Yes did two packed shows in the Auditorium with Al Cooper and Curtiss Maldoon, 
and the mood was definitely early Beatles, right down to the cockiness and wisecracks.

The Charts:
Billboard, August 7, 1971:
#168 -- Yes Album [First time into the U.S. Charts!]

Billboard, August 14, 1971:
#138 -- Yes Album

Billboard, August 21, 1971:
#138 -- Yes Album 

Billboard, Oct. 9, 1971:
Yes in Return Visit to the U.S.
NEW YORK - Yes, British group who scored heavily during its first U.S. tour in July, have scheduled a 
second trip, which will open at the Whisky A Go Go, Los Angeles, on Nov. 3.
The group will be in the country for seven weeks and dates are being set.

Rolling Stones Supplement / Los Angeles Flyer, Nov. 11, 1971:
Wednesday the 3rd
Yes and Mary Wells, rock and soul music; Whisky.  Through the 7th.

Billboard, Nov. 27, 1971:
Yes
The Forum, Inglewood, Calif.
Yes is that odd little gem of a group whose music evokes images of long ago and visions of what is yet to come. 
 Their music is explosively powerful yet wistfully gentle;  progressive rock that is classically influenced.  All are 
highly skilled musicians and they are a joy to hear.  A special treat is lead singer John Anderson [That's what it says!] 
who has a tenderly exciting emotion-filled voice and a jaunty stage presence.  They performed a stunning set 
comprised chiefly of material from "The Yes Album" including their hit single "Your Move."   Shelly Heber