Help on identifying a certain voice...

Hi all! I recently discovered that June Foray may have provided Mrs. Sheep's voice, Lambert's purrs, and voices of the other lambs/sheep. Found this on Wikipedia, which isn't always an accurate source. I've tried entering this credit, but since it has been at least 30 days since I submitted it, it still has not appeared under cast/crew. Can anyone on here help me verify that Foray did indeed provide voices for the above characters? I'll be eternally grateful if this is true. Thanks, all!