Map of Tulsa Oklahoma

library(sp)

## Warning: package 'sp' was built under R version 3.2.5

library(leaflet)

df <- data.frame(longitude = runif(10, -95.992775, -95.992775), 
                 latitude = runif(10, 36.153980, 36.153980))

coordinates(df) <- ~longitude+latitude

leaflet(df) %>% addMarkers() %>% addTiles()