Rail ID numbers

I have some rail and I'm just wondering what the code means. It says "Lackawanna 9032 5 1915"

I suspect that the rail was manufactured by the Lackawanna Steel Co. and it was produced in 1915, but what do the other numbers indicate?

Thanks.
Steve

90 is the weight in pounds per yard, 5 is the month to go with the year.
32 means Reading Railroad's design, however,I don't know that the Reading Company had their own 90 pound rail, for that they used 9040, American Society Civil Engineer's design. Reading did have their own 100 pound rail, 10032.
Please recheck your numbers.
Sources are the "Tee Rail Sections - Data" page in both L. B. Foster's and Pohl Corp.'s catalogs.
At some point, Lackawana became the Lackawana Plant or Mill of a larger firm, probably Bethlehem Steel Corp.