Standard Gauge sales began Nov 1906..#2&1 trolleys ...mid / later 1907 ..steamers 5& 6 ...and frieght were added.
1910 the first passenger cars were added,18,19&190...with knobs .
The real,sales pinch for standard gauge,,..which was not a standard ...and advertised as 2" gauge till 1913..was the,sectional track ... which was a big improvement over ribbon track used by thr other,American electric train manufactures .
Here is a video link to see a Lionel 1912 pulling the early knob 18,19& 190...all from 1910 ...and a thin rim 5 pulling some 10's series cars ..all circa 1908-9 ...
Running on the original split pin standard gauge track ..1908-1912.
Cheers Carey