Edmondson entered the world of sculpture at the advanced age of about 60 years old in 1934. He reported that he received a vision from God, who told him to start sculpting: "I was out in the driveway with some old sculptures of stone when I heard a voice telling me to pick up my tools and start to work on a tombstone. I looked up in the sky and right there in the noon daylight, he hung a tombstone out for me to make. I knowed it was God telling me what to do." He carved tombstones primarily from chunks of discarded limestone from demolished buildings, which were delivered to him by wrecking companies' trucks. A signature Edmondson tombstone reflects strong large lettering carved in the stone. He began his career by working on these tombstones, which he sold or gave to friends and family in the community. Soon he began carving lawn ornaments, birdbaths, and decorative sculptures. In his yard hung a sign "Tomb-Stones. For Sale. Garden. Ornaments. Stone Work W M Edmondson".