Link to some intersting MATH ( Linear Algebra) History Websites:

    Abrief History
    The Origins of Algebra

    An overview of the history of mathematics.
    From 2000 BC to Newton and Leibniz

    History of Matrices and determinants
    From second century BC to Mirsky ( 1983 )

    History of Abstract linear spaces
    From Bolzano to Banach 1920