Gabriele's first confirmed work for Timely was both penciling and inking the "Mantor the Magician" feature in The Human Torch #2 (Fall 1940) [REF].
On Captain America, Gabriele inked pencil art by co-creator and future industry legend Jack Kirby on some stories in Captain America Comics #3-4 (May-June 1941) and All Winners Comics #1 (Summer 1941), and on the cover and in all three of the hero's stories in Captain America Comics #8 (Nov.