I picked this up print (cut out of an 1880 paper) on Amazon.

'Year printed c1880. Antique wood engraved print. This print was published in c1880 but please note that it depicts an earlier scene dated 1800 and the printmaker may have drawn on an earlier original work.'

'Rocque’s map of London (1769) shows the new smallpox hospital at Battle Bridge, where King’s Cross Station now stands.' 

Small pox was a horrendous condition.   These links lead to interesting resources on the small pox hospital .