Many of the characters in A Poet in Center City recur in other Adam Fieled books. Heather Mullen, Emma Pasternak, and Wendy Smith recur in Equations, as do John and Kyra Rind; they also appear in Letters to Dead Masters. Trish Webber and Tobi Simon do, similarly, as does Jade Racino, and Christopher Severin appears as Jeremy in Trooper in Something Solid, where John becomes Mike Land, and Trish and Tobi become Mary and Abby, and Heather becomes Hannah. The protagonist, Adam Foley, appears named in PICC and Letters, Equations and Chimes.