Union soldier posing with a poncho. Many were made by Goodyear which had patented the process of vulcanizing rubber in the 1850's Vulcanizing rubber made it resistant to water while at the same time avoiding becoming brittle.Union soldier posing with a poncho. Many were made by Goodyear which had patented the process of vulcanizing rubber in the 1850's Vulcanizing rubber made it resistant to water while at the same time avoiding becoming brittle.
Union soldier posing with a poncho. Many were made by Goodyear which had patented the process of vulcanizing rubber in the 1850's Vulcanizing rubber made it resistant to water while at the same time avoiding becoming brittle.