The illustrator explains the alphabet and page composition
In a 2016 firsthand interview, Lois Ehlert discusses the book’s endpaper alphabet: capitals and lowercase letters, each letter in a different color. She also explains how her graphic-design background shaped page composition and the placement of type alongside artwork.
That account documents an alphabet used as part of a picture-book design. It does not identify a retail font or offer an installable Chicka Chicka Boom Boom alphabet. A bright rounded font on a download site should therefore not be labeled the book’s original typeface without a separate primary source.
Make a colored alphabet activity with stable letter shapes
For an original alphabet display, pick one suitable set of letterforms and keep those shapes stable while experimenting with color and placement. Include uppercase and lowercase where the activity calls for both; do not let a colored illustration substitute for a required letter. Keep enough contrast between each character and its background that a child can distinguish its outline.
Independent Fredoka specimens and Archivo Black can help explore different bold shapes for your own display. They are not identified book fonts. For a child’s copying model, use a dedicated handwriting resource matched to the exercise instead.
Separate the decorated display from instructions and copying
Give an alphabet display room to be playful, but set the actual activity instruction in a quieter text area. If the letters move around a picture, check that all required characters remain present and that their order is clear when order matters to the task. Make a separate clean model for copying rather than asking the child to trace a tilted, overlapping decorative character.
For a short celebration caption, try the homepage fun copyable lettering styles. It changes characters through Unicode substitutions; it does not provide the book’s original artwork or a controlled alphabet-teaching font. Keep an ordinary-text version of any name or instruction when sharing it between apps.
Your questions, answered.
Does the illustrator’s interview identify a font download?
No. Ehlert discusses the colored alphabet and page design, without naming an installable font for this book.
Can a similar colorful alphabet use a different font?
Yes, for your own original activity, choose clear letterforms and manage color separately. Describe the result as your own lettering choice rather than the book’s original font.
Sources & background
Sources supporting this page’s explanations. Practical examples are our editorial suggestions.