Harbison-Walker Refractories Co., fire brick......... 
Hardie Bros. Co, candy. ..........ccooiivuinnn.. 
Harmony Creamery Co., dairy products. ........... 
Heinz Co., The H. J., food products. ................ 
Heppenstall Forge and Knife Co., forged products and 
KNIVES, tvuve initia ee 
Hermes-Groves Dairy Co., dairy products. ........... 
Hillman Coal and Coke Co, coal and coke ........... 
Homestead Hospital, Homestead, Pa................. 
0. Hommel Co., The, bronze powder. ............... 
Hubbard & Co. and Subsidiaries, spades, shovels and 
tools. . 
Industrial Home for Crippled Children...... ........ 
Italian Sausage and Provision Co., meat packing. ..... 
Jones & Laughlin Steel Co., iron and steel. . 
Vol. 
Date 
Dec. 1922 
Dec. 1925 
Dec. 1925 
Dec. 19925 
3 
"9 
12 
12 
13 
12 
1 
Apr. 1927 
Dec. 1925 
June 1920 
16 Dec. 1928 
13 Apr. 1927 
3 Jan. 1920 
16 Dec. 1928 
12 Dec. 1925 
3 
Jan. 1920 
KK 
Keystone Driller Co., contractors supplies. ........... 13 Apr. 1927 
Kier Fire Brick Co., fire and silica brick.............. 9 Dec. 1922 
Kittanning Brick and Fire Clay Co., face building brick. 9 Dec. 1922 
LaBelle Iron Works, iron and steel... ............... 
Ladd Water Tube Boiler Co., steam boilers........... 
Lanz Brick and Tile Co., The M., common and face brick 
Lockhart Iron and Steel Co., steel bars... .. RP 
Lutz and Schramm Co., pickles and preserves......... 
Mchcenan Bros Co-lhoilers and boiler plate... 
McCullough-Dalzell Crucible Co., crucible steel manu- 
facturing, ...converiessnnate. rEsEEEAE 
McFeely Brick Co, brick. ......................... 
McKeesport Hospital, McKeesport, Pa........... 
McKeesport Tin Plate Co., tin plate. ................ 
McKinney Manufacturing Co., wrought iron hardware. 
Macbeth-Evans Glass Co., illuminating and industrial 
B08, pone sp ETE EER ES TARE TIE EERE BD TR 
Manufacturers Light and Heat Co., oil and gasoline. . . 
Mellon Institute of Industrial Research. . . 
3 
i3 
9 
3 
12 
Jan. 1920 
Apr. 1927 
Dec. 1922 
Jan. 1920 
Dec. 1025 
3 
Apr. 1927 
Jan. 1920 
Dec. 1922 
Dec. 1928 
Jan. 1920 
Apr. 1927 
3 
183 
5 Dec. 1920 
10 Dec. 1923 
14 Apr. 1928