r/ImagesOfThe1800s•9 yr. agoImagesOfNetwork1870 Johnson Map of the World showing Temperature and Ocean Currents [3308 × 4500][oldmaps]Posted Jun 3, 2017, 5:37 PM UTC11Share
![1870 Johnson Map of the World showing Temperature and Ocean Currents [3308 × 4500]](/api/ImgurImages?id=RU67EfX.jpg)