No matter how you choose to search the NARA site for documents the way you manipulate the results list is the same. By clicking on the triangles next to any of the column headers (highlighted below) the table will automatically sort the table by that parameter in either ascending or descending order. The column headers include:
For example, if you wish to sort the list by Publication Title from A to Z click on the triangle pointing upward ONCE and the list will sort in ascending order. Since there are 4,324 documents to sort it may take a few moments for the list to manifest.