소개
It is hard to believe that young men once rode horses to carry mail from Missouri to California in the unprecedented time of only 10 days. This relay system along the Pony Express National Historic Trail in eight states was the most direct and practical means of east-west communications before the telegraph.
출처: U.S. National Park Service (NPS). 일부 이미지는 third-party 라이선스이며 표기된 출처를 따릅니다. 운영시간·입장료 등 최신 정보는 공식 안내를 확인하세요.