In 1919, it appears that the Byrd Brothers (Hubert R. h - 317 E Chapel Hill, and William E. - h 831 N. Mangum) were part of the Byrd and Bryan grocers, located at 119 West Parrish Street, along with Kenney U. Bryan (h 833 N. Mangum.)
By 1940, the Byrd Brothers had gone out on their own and teamed up with a Pickett - becoming Byrd Bros. and Pickett - "Field Garden and Lawn Seed" - located at 211-213 Morgan Street.
Remembering the old days, at the age of 83 Mr. H. R. Byrd in 1977 said, "We sold wagons and buggies, harness, mowing machines, churns, stoves, harrows and a lot of supplies for the garden and farm. We would swap merchandise for corn, wheat and chickens. We handled a world of country meat, wheat, oats and eggs."
The evolution from Byrd Bros. and Pickett to Stone Bros. and Byrd isn't clear to me, but by 1963, Stone Bros. and Byrd was operating in the same location on Morgan St. With the impending loss of their buildings to urban renewal, the principals - Robert M. Bullard, C. Hamilton Jones, and RL Garrard - acting for Stone Bros. and Byrd, acquired the land on which their current building sits in 1967 from Louise Montgomery. Prior to 1950, this parcel contained two small houses, likely rental housing.
Per the Stone Bros. and Byrd website:
By the late 1960's, a modern facility was built to accommodate the expanding needs of customers and offered drive-through service, which allowed farmers to pull their trucks into a loading area. Every aspect of the buying experience was thought about by the astute observers of retailing science when planning the new location, from chairs being provided for customers in the sales room for resting and conversing, to accomodating the changing demographic of shoppers. "A thing we kept in mind when planning our location is that women are doing more and more of the shopping in our line of merchandise, and we wanted our place to be attractive and convenient for them to come in and shop," said Mr. Robert Bullard in March of 1969 as quoted in Feedstuffs, a weekly newspaper for agribusiness.
The reins of Stone Bros. & Byrd were transferred in 1976 to George Davis, a consummate "gentleman farmer" with a strong knowledge of horticulture and an uncanny ability to connect with customers. "George Davis posts himself at the threshold of Stone Bros. & Byrd, his old-fashioned lawn-and-garden center near downtown, eager to meet the "dirt people." That's what he calls his loyal customers, the ones who come into the 85-year-old store and are greeted by name. He seems to know their lawns even better," sa[id] Kaitlin Gurney in The News & Observer in November of 1999, after George and Stone Bros. & Byrd earned the Outstanding Downtown Merchant of the Year award for Durham, NC. "It's his combination of service, knowledge and ingenuity that earned Davis..the award. He knows his customers by name and identifies market niches" the article states. "Country hams and sausages hang from the ceiling next to jars of old-time candy sticks and barrels of homemade molasses. Large wooden bins full of vegetable seeds line the walls. In the spring, seeds are sold just as they were when the feed store opened 85 years ago. But in the adjoining room, exotic hothouse plants are nurtured next to build-it-yourself pond kits and the latest in fertilizer technology," says Gurney.
Stone Bros. and Byrd is one of the few 'old-line' businesses continuing to operate in the same 0.5 mile downtown Durham radius in which they originated, and retain a loyal following of long-timers and newcomers alike.
Find this spot on a Google Map.