Final answer:
Other messengers likely did reach Concord as part of a well-organized alarm network that spread the news of the British advance beyond just the rides of Revere and Dawes, ensuring that the militias were prepared for the ensuing skirmishes.
Step-by-step explanation:
Yes, it is likely that other messengers made it to Concord. While Paul Revere and William Dawes did not complete the full journey due to being captured, the alert system they helped initiate was a network intended to spread such urgent information. Revere's capture before reaching Concord is a historical fact corrected by poet Henry Wadsworth Longfellow's narrative, but the broader alarm system facilitated communication of the British approach.
The vast network of alarms and the dissemination of news by various means, such as bonfires, bells, and rider relays, indicate that the message reached the intended recipients. Despite the British's attempts to keep their plans secret and move quickly through swampy terrain, the colonists were prepared. As revealed by the skirmishes that took place, including the famous Battle of Lexington and Concord, the militias assembled and engaged in combat with the British forces, underscoring that the warnings had been effectively communicated across the region.
Additionally, Colonel Smith's action of sending Major Pitcairn ahead and requesting reinforcements from Boston when they saw the alerted populace, further supports that the news of the British actions spread effectively among the colonies.