Grahame doesn't have a web site but you can email him directly at:
[email protected]
Here is what he has so far for 15mm 1815 Prussians but he may have added more to it as this list was current as of November 2007.
Prussian army 1813~1815 ( including Waterloo )
PN1 1st, 2nd and 3rd Line Infantry Regiments
PN2 4th, 5th and 6th Line Infantry Regiments
PN3 7th, 8th and 9th Line Infantry Regiments
PN4 10th, 11th Line Infantry and Silesian Landwehr.
PN5 Pommeranian, Silesian, East and West Prussian grenadiers
PN6 Landwehr cross ( Black on white & white on black )
PN7 Landwehr and Reserves ( Black eagle on white )
PN8 East Prussian/Brandenburg Landwehr & Reserves ( Red eagle )
PN9 Silesian Landwehr & Reserves ( Black eagle on yellow shield )
PN10 Westfalian Landwehr & Reserves ( White horse on red shield )
PNC1 1st to 6th Dragoons