This study aims at investigating the effect of using historical text document resources on the historical substantive concepts understanding among Form Four students. A learning activities module was developed based on using historical text document resources as reference for intervention in this study. Pre-Experimental Design: One Group PreTest-PostTest was used in this study. The impact of using historical teks document resources on the historical substantive concepts understanding were measured in the pre-test, post-test and delayed post-test. A sample of respondents comprising 55 students from existing classes was recruited in this study using cluster sampling techniques. The historical substantive concept understanding test was used in this study. Data were analyzed by descriptive and inference statistics using Repeated-Measures One Way ANOVA test. The findings showed that the use of historical text document resources has an impact on the historical substantive concepts understandingand retaintion. The implication of this study is to provide the content and methods for implementation of history learning by using a set of collections of historical text document resources which relevant to a historical topic.