Techniques

Design Originals

Notebook Doodles Be Kind, Be Creative, Be Yourself! Coloring and Activity Book (Design Originals) 32 Beginner-Friendly Art Activities and Inspiring Quotes to Boost Confidence in Tweens

Sterling Ethos

Modern Witch Tarot Coloring Book (Modern Tarot Library)

DC Comics

The Flash: An Adult Coloring Book

Schiffer Publishing

Earthen Pigments: Hand-Gathering & Using Natural Colors in Art

CRC Press

Data Sketches: A journey of imagination, exploration, and beautiful data visualizations (AK Peters Visualization Series)

Ancient Rome: Infographics

Drawing with Christopher Hart

The Manga Artist's Coloring Book: Girls!: Fun Female Characters to Color

CreateSpace Classics

Coloring Books for Adults Relaxation: Swear Word Animal Designs: Sweary Book, Swear Word Coloring Book Patterns For Relaxation, Fun, and Relieve Your Stress

Union Square Kids

A Million Magical Creatures: Enchanting Characters to Color (A Million Creatures to Color)

The Experiment

The Mindfulness Coloring Book, Volume Two: Anti-Stress Art Therapy

For Dummies

Color Theory For Dummies

Design Originals

Sugar Skulls Coloring Book (Coloring is Fun) (Design Originals) 32 Fun & Quirky Art Activities Inspired by the Day of the Dead, from Thaneeya McArdle; Extra-Thick Perforated Pages Resist Bleed-Through