HFF Light Petals is based on Pastel, from page 90 of Brushstroke and
Free-Style Alphabets: 100 Complete Fonts by Dan X. Solo, first
published by Dover Publications in 1977. Pastel (Pastel Bounce) is also
featured on page 92 of The Solotype Catalog of 4,147 Display Typefaces,
also by Dan X. Solo.