  We discuss the problems of uniqueness, sampling and reconstruction with
derivatives in the space of bandlimited functions. We prove that if X is
sequence of real numbers such that the maximum gap between two consecutive
samples is less than certain positive constant c, then bandlimited function of
bandwidth {\sigma} can be reconstructed uniquely and stably from its nonuniform
samples involving derivatives. We also prove that if the maximum gap is less
than or equal to c, then X is a set of uniqueness for the space of bandlimited
functions of bandwidth {\sigma} when the samples involving k-1 derivatives. As
a by-product we obtain the sharp maximum gap condition for samples involving
first derivatives.
