HFF Sultan of Swat is based on Maharaja from page 57 of "Condensed
Alphabets: 100 Complete Fonts" by Dan X. Solo. Maharaja is also featured on page 8 of "The Solotype Catalog of 4,147 Display Typefaces".
The name of the font was taken from the sample text used for Maharaja in
"The Solotype Catalog of 4,147 Display Typefaces". :-)