In the November 1972 Kickshaws, Dave Silverman cited a July 22 1972 poem by George Starbuck in the New Yorker magazine which exhibited 15 words rhyming with OH, each ending with a different letter of the alphabet.
Word Ways: Vol. 9
, Article 21.
Available at: http://digitalcommons.butler.edu/wordways/vol9/iss1/21