Posted on the Pony Express National Trail Facebook page:
“You may not be able to get out on the Pony Express, so we will bring it to you! Read along to take a virtual visit to five historic station sites across 53 miles.
(Photo/NPS/Exhibit from Garden Pass/Click the link for an accessible pdf version of the full exhibit).”
Comments give more information about access to the mining area where Sulphur Springs Station is located. Note that this station is off the Pony Express Bikepacking Route if you take the detour at Mile 1735 to restock at Eureka.