Though in the present age the Internet is an important resource for gathering information, there are also plenty of significant and helpful traditional sources. The best data collection strategy in information broker activity is one that employs techniques from both. The first part of the text is focused on the methodology of obtaining information. The author points out the place of information broker in the information process. One of the key aspects of the following analysis is an attempt to indicate the main definitions and classifications of the traditional sources of information in a field of historical knowledge as well as in the information science. The second part of the article considers information broker professional qualifications, since for him is important to know how to search, gather and integrate information from institution such as the national and private archives, libraries or museums.