Here's Your Sign! Be the new owner of Kelly Signs in Great Falls, MT. Kelly Signs is a well-known and long-standing source for locally produced signage. The business creates: EXTERIOR SIGNS, LETTERING, AWNINGS, PLAQUES, INTERIOR SIGNS, WALL GRAPHICS, TRADE SHOW DISPLAYS, BANNERS, VEHICLE LETTERING & GRAPHICS, LOGO DESIGN, WINDOW LETTERING & GRAPHICS. You can search the web for Kelly Signs in Great Falls, MT to see examples of work that has been done previously. This is a thriving business in high demand. The shop consists of just over 1600 square feet and business equipment/ tools are included.