Find all close price between two dates

Hello,
I want to find all closing price between two dates e.g. 2016-01-26 and
2016-02-26

My thought is to use for loop

D[1] = "2016-07-26";
D[2]= "2016-07-27";
D[3]= "2016-07-28";
.
.
.

for (i=1;i<3;i++) {

"Close value at (or before) " + D[i]+ " is " + Lookup( Close, _DT(D[i] ), -1 );
}

But it seem not work, any help for advanced thanks

Find all close price between two dates