Harris Tango - USARS
It is interesting to see how the roller versions of this dance have evolved over the years, from a set pattern, to border and back to set pattern; and how a flat step sequence has been incorporated, and how it has been the 'modified' version since the first edition of RSROA "Roller Skating Dance Testing 1938.
source: 2018-2019 USARS Selected Dances
source: 2001 USARS Dance Descriptions And Diagrams 030306
source: 1973 USAC/RS American Roller Skate Dancing Part II
source: RSROA Edition II 1953
source: ARSA Amateur Skater's Hand Book 2nd ed 1953
source: Skate Dance Diagrams, Rawson & Associates 1942, Perry B. Rawson editor
source: Roller Skating Dance Tests, Roller Skating Rink Operators Association of the United States (RSROA), First Edition, September 1938
note: parts of pages removed to improve clarity and flow of description, no dance diagrams were published at the time.