The Harold Schnair Sales Company was established in 1935.
SSi services the Southwest and MINK states.

The Southwest territory is made up of: Texas, Louisiana, Oklahoma and Arkansas.  The territory is supported by our corporate office in Dallas, Texas.  Our Dallas office also specializes in servicing related markets in addition to our core aftermarket automotive business.

The MINK territory is made up of: Missouri, Iowa, Nebraska, Kansas and Southern Illinois.  The territory is supported by our Springfield, Missouri office.

SSi was the first agency to open a full ser­vice office in Spring­field,
Mis­souri.  The Spring­field office was designed not only to coor­di­nate the sales effort of the MINK states ter­ri­tory, but also to directly ser­vice the O’Reilly account head­quar­tered in Springfield.