2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/115629We show that for an alternating pretzel knot K the canonical genera of its Whitehead doubles W(K) are equal to the crossing number c(K) of K, verifying a conjecture of Tripp in the case of these knots.16 pages, 12 figuresGeometric Topology57M25text