"Tiger, Tiger, Burning Bright..."
http://www.bartleby.com/101/489.html
We all know this is the William Blake poem quoted by Red John to Jane.
It has also already been mentioned that the poem quoted by Bertram in "Red Queen" is a Blake poem called The Cradle Song.
To add to this connection, both poems were originally published by Blake in 1794 in the same collection, entitled Songs of Innocence, Songs of Experience.
The verse from The Cradle right before "when thy little heart doth wake..." (quoted by Bertram) is: "O the cunning wiles that creep / In thy little heart asleep!". RJ/Bertram knows exactly who the real mole is (O'Laughlin), so the line implies that he is amused by the wiles of Jane in helping Hightower escape.
Lastly, this might be silly, but if you go to the link above at bartleby.com for the text of The Tiger, and then hit next, [to go to Blake's next poem in their archive], The Cradle is the very next poem...