This edition may be a re-arrangement of Smetana's original. My source was:
Musica Boemica per Organo, edited by Jiří Reinberger (1914-1977).
From the preface by by Dr. Čeněk Gardavský:
"...Not even the Fugue A major published in this selection is an independent composition for the organ, it is but a modernized form of a contrapuntal exercise dating back to the days when Smetana had studied the art of composition with Josef Proksch....".
And from the preface by Reinberger:
"Thus Smetana's Fugue is edited with very small alterations, from the copy of Prof. B. A. Wiedermann. Smetana's manuscript is at the Smetana Museum in Prague."
In this case, 'copy' means 'arrangement' as Wiedermann (died in 1951) arranged Smetana's contrapuntal exercise for organ.
I don't know from whom which alterations or additions are in particular. So I put each part in an extra staff and omitted all phrasings, articulations and dynamics. --Ralph Theo Misch 00:12, 30 November 2010 (UTC)