Kelly Springfield Rollers

are indispensable for the economical
building of fine highways.

Made in all types and sizes—Steam
and Motor driven.
Buffalo-Springfield Pressure Scari-
fiers can be attached to Macadam
Rollers already in the field.

The Buffalo-Springfield

Roller Company

TEXACO Asphaltic Concrete on Route No. 168, Pennsylvania State Highway, Constructed in 1919 by H. B. Sproul Construction Company

Best for Industrial Buildings, such as factories,
foundries, galvanizing works, metal treating
plants, also for schools, hospitals, etc.

Alpina Efficiency Appreciated Briggs & Stratton, Electrical Specialties, say: “We were experiencing a great deal of trouble with fumes and back draft; but since installing the Alpina ventilators this has all been eliminated. We have found them very satisfactory for this purpose and heartily recommend them.”

Write for Alpina Booklet

Milwaukee Corrugating Company

MILWAUKEE, WIS.
Branch at

Minneapolis Sales Office
KANSAS CITY, MO.

Lumber Exchange

MICHIGAN ENGINEERS Make your work Everlasting-Specify

Vitrified
Salt-Glazed
Material

FOR ALL SEWER-DRAINAGE

and ROAD WORK

“It will last as long as the

Earth itself”

AMERICAN VITRIFIED PRODUCTS COMPANY Sales Office-Citizen Patriot Building

JACKSON, MICHIGAN

"QUALITY
Equipment"

Koehring Machine Co.,

Koehring Mixers Blaw-Knox Co., Road Forms, Wall Forms, Buckets J.D.Adams & Co.,Leaning Wheel Graders, Drags, etc. Barnes Mfg. Co.

Pumps Acme Road Mach’y Co., Crushers and Screening Plants Bell Locomotive Works. Industrial Locomotives Kilbourne & Jacobs Mfg. Co. Wheel Scrapers, etc. Genesee Gravel Company Sand and Gravel

"Service Guaranteed"

Good Roads Supply Company

1409-1410 Ford Building

DETROIT, MICHIGAN

HORATIO S. EARLE President
GEORGE L. EARLE, Sec'y and Treas.