Published by several local publishing houses and international agencies like the UNICEF and WORLD VISION INTERNATIONAL, Gatmaitan has also chaired the PBBY and Kuwentista ng mga Tsikiting (KUTING).
Gatmaitan's works have been released through several local publishers and international bodies like UNICEF and WORLD VISION INTERNATIONAL. In addition, he has served as chairman of the PBBY and Kuwentista ng mga Tsikiting (KUTING).