Family brought me a yard sale find, circular 472, a 1914 brochure on "Pennsylvania Beekeeping". Inside this is a 4x6 card with the following printed on it.
33% Commercial Ammonium Nitrate
Burlap 6-8" SQ
1 LB Ammonium Nitrate to 1/2 Gal. Water
Wring out and dry
I assume this is bee related, likely smoker fuel. But I do not know. Does anyone have any knowledge as to what this is?