#history #medicine #healthcare #science #vaccines #polio #polio vaccine #jonas salk

#jstor #jonas salk #google doodle #tumblarians

#history #medical history #military history #virology #vaccination #ww2 #usa #jonas salk #thomas francis jr. #world health organization #polio #influenza

#history #medical history #vaccination #usa #polio #jonas salk

#one of several reasons why hes my hero #jonas salk

#jonas salk #the legend #the paladin speaks

#postors #history #science #paleontology #mary anning #albert einstein #redbubble #gideon mantell #bone wars #nikola tesla #thomas edison #marie curie #ada lovelace #jonas salk #rosalind franklin #katherine johnson #hidden figures #chemistry #computers #equations #charles darwin #jacques cousteau #richard owen #isaac newton

#postors #history #science #paleontology #mary anning #albert einstein #redbubble #gideon mantell #bone wars #nikola tesla #thomas edison #marie curie #ada lovelace #jonas salk #rosalind franklin #katherine johnson #hidden figures #chemistry #computers #equations #charles darwin #jacques cousteau #richard owen #isaac newton