  In the 60s of the last century the few courses of History of physics in
Physics degree were held by scholars who, apart from a few exceptions, did not
have a specific research background in the field. Some activities, books,
social movements in the civil society allowed in the 70's the entry, among
Physics courses, of teachings in History of physics held by scholars
specifically trained for that job since their degree. A second change happened
in the 90s when many difficulties forced physicists to allocate fewer and fewer
resources to the History of their discipline. I'll outline the features of the
two periods and the efforts of Historians to find a proper space in Physics
departments.
