http://sourpuss.net/XTrkCad/Files/BarryL's American Flyer Stuff
name	size	date	description
1956 AF Catalog Track &...	1.1 MB	10-17-19	[barryinal] AF Track & related accessories
ACG19.350 Track.xtp	4.0 KB	10-17-19	[barryinal] AC Gilbert American Flyer Track Parameter File
Fig 35 - Annotated AF...	217.1 KB	10-17-19	[barryinal] Graphical interpolation of AF switch geometry to find the radius of curvature
S_ACG_18.824in Radius...	4.3 KB	10-17-19	[barryinal] A.C. Gilbert / American Flyer Std S-scale track with 18.824" radius curves
S_ACG_20.000 Track.xtp	5.0 KB	10-17-19	[barryinal] A.C. Gilbert - American Flyer Sectional Track with curve having 20" radius (experimental)
Test Wye.xtc	56.9 KB	10-17-19	[barryinal] Some layout fragments testing both curves with 20" radius and curves with 19.35" radius