他的儿子蒂姆也是第一次看到其中的许多遗物，包括斯蒂芬·霍金六岁时给他父亲写的一封信。蒂姆·霍金�
His son Tim sees many of them for the first time – including a letter that his father wrote to his dad when he was just six .
给父亲的一封信