Ferguson Brothers was a wholesale furniture manufacturing company founded in the late 1800s in New York and incorporated in 1903 in New Jersey. It ceased manufacturing in 1953 when the family sold it. They were known for inexpensive reproductions of Colonial-era furniture.
In excellent condition, your end table could bring anywhere from $80 to $200 if you found a motivated buyer (for example someone who already owned one and wanted a pair). You occasionally see them on ebay for $75-$150.