The McKeever Cartridge box contains 2 rows of woven loops holding 10 cartridges each.  It also has a side pocket for a combination tool. 

Our specimen has "US" embossed on the front and is scratched "WM".  It is marked on the flap "WATERVLIET ARSENAL".  The inside is woven material.  Another specimen in our collection has woven loops sewn on leather.  The inside is stamped "A.R. SMITH".  Yet another specimen has no "US" embossing.  The interior is woven and written on it is "230".  On the side on the outside is stamped "C.H.", presumably inspector's initials.