I am trying to locate a furniture company named Johnston or Johnson
Benchworks. Can someone provide an address and telephone number for
this company?

Dear patsy2,

Here is contact information for Johnston Benchworks:

Johnston Benchworks
125 White Pine Street
North Wilkesboro, NC 28659
Phone: (336)838-9922

Johnston Benchworks is, by the way, only a brand name of the mother
company, located in the same town. You might also want to contact
them:

Greene Brothers Furniture Co    
125 White Pine Street
North Wilkesboro, NC 28659-3425
Phone:(336)838-2091

Sources:

Switchboard.com - Yellow Pages Online
http://www.switchboard.com/

Warren's Interior Design and Furniture, Inc.: Traditional Motion
Upholstered Furniture
http://www.warrensinteriors.com/tr_mo_up.htm

The Americana SmorgasBoard: Johnston Benchworks, by B. Friedhoff, 1996
http://www.pentimento.com/fl3.htm

Wilkesmag.com: Finishing Touches (in Google Cache!)
://www.google.de/search?q=cache:y5Up_-lcsncC:www.wilkesmag.com/Features/feature1.html+benchworks+%22North+Wilkesboro%22&hl=de&ie=UTF-8

Search terms used:
"johnston benchworks" contact:
://www.google.de/search?q=%22johnston+benchworks%22+contact&hl=de&lr=&ie=UTF-8&oe=UTF-8&newwindow=1&start=10&sa=N
benchworks "North Wilkesboro":
://www.google.de/search?q=benchworks+%22North+Wilkesboro%22&ie=UTF-8&oe=UTF-8&hl=de&btnG=Google-Suche&meta=
"greene brothers furniture":
://www.google.de/search?q=%22greene+brothers+furniture%22&ie=UTF-8&oe=UTF-8&hl=de&meta=

Hope this answers your question!
Regards,
Scriptor