This phrase identifies a particular entity probably positioned in a selected metropolis and state. The parts counsel a enterprise, group, or presumably people related to the locality of Quincy, Illinois. Evaluation of every ingredient factors towards a correct noun development, with “Duker and Haugh” functioning as a compound noun designating the entity’s title, and “Quincy, Illinois” appearing as a locative noun phrase specifying its geographic placement.
The relevance of this identifier stems from its position in pinpointing a topic inside a broader geographic space. Realizing the placement helps to contextualize the topic, enabling focused analysis, whether or not it entails exploring native enterprise exercise, historic data, or group demographics. The conjunction of the title with the placement ensures the correct identification of a single supply.