On April 20, 1954, Dr. Isaac González Martínez died in a deep sleep, with his glasses on, the lamp lit and in his hands he held an open science book, "Luminiscence and the Scintillation Counters". His life is noted for his research career and medical wisdom both locally and internationally. The discoveries and achievements of Dr. Isaac Gonzalez Martinez were impressive and of great impact throughout the island. Since founding the Puerto Rican League Against Cancer, his medical career took a turn towards research and treatment for the disease of cancer. Dr. Isaac Gonzalez Martinez gave back to his homeland his scientific knowledge. He created a concept of comprehensive care for cancer patients by providing specialised services under a single institution, ahead of the times. He worked until his last day and studied until the moment of his departure. His departure caused a great stir in the print media, to the extent that there was mourning in the Senate and the House of Representatives. Copies of reviews follow.