Schuylkill Navigation Company have line 100 miles long using Brooks insulators

Brooks' Improved Paraffine Insulators.

OFFICE OF SCHUYLKILL NAVIGATION CO.,

READING, PA., July 14th.

DAVID BROOKS, Esq.

Dear Sir - Your paraffine insulators have been in use on the telegraph lines of this Company since its construction, nearly a year ago. The line is one hundred miles long, and works well, the experience of all our operators being that they notice no difference in working in wet or dry weather. Thus far we have had no trouble with the line on account of insulation.

I take pleasure in recommending your insulators as being all that we could wish.

Very truly yours,

EDWIN F. SMITH.

Res. Eng'r.