Thank you to
Peter Rivet who replied:
think the description 'Last Horse Drawn Tram' relates to the last
horse-drawn tram on a particular route, in each case.
The photo showing the last horse tram to
Newington and Craigmillar Park clearly wasn't taken in 1907. It would
presumably have been on 23 May 1900 when this route was converted to cable
Craiglockhart route was left out of the
original scheme because it carried relatively light traffic, and as you
point out it wasn't converted until 1907."