In this paper we argue that for the secondary analysis of qualitative data to be effective researchers also need to subject any accompanying interviewer notes to the same secondary analysis process. The secondary analysis of interviewer notes can provide a great deal of insight into the research process and the attitudes, experiences and expectations of those originally collecting the data. Such information is essential if meaningful analyses are to be offered. Using interviewer notes from a little know research project on youth transitions carried out in 1960s Leicester, this paper aims to explore how the interviewers experiences of the research process and their perceptions are documented in the interviewer notes. The analysis of the data reveals a number of themes surrounding the original collection of the data that would have remained hidden if the interviewer notes had not also been subjected to the secondary analysis process.