A class of distribution-free tests for two-sample location problem is based on the
signs of most extreme observations in the sub-samples of sizes c and d from X
and Y samples respectively. The test statistics have been expressed in terms of
linear rank statistics. The asymptotic normality of the test statistics is established.
Asymptotic e�ciencies indicate that members of our class do well in comparison
with some already existing test statistics for light and medium tailed distribution