TREVOR ROBERTS

ISO Equipment Symbols - Collection of standard symbols/icons used on machinery & equipment of all types. 

The Engineer's Sketchbook - Exhaustive visual dictionary of devices, assemblies, movements & contrivances for use in designing machinery. 

Biodiversity Heritage Library - Over 300,000 scientific illustrations of all types of wildlife.

Indieground.net - Free and Paid textures, fonts, overlays, & other misc. graphical resources.

Eycndy.co - Visual catalog of motion graphics techniques.

Standard Highway Signs - Federal Highway Administration handbook of highway signage design standards. 

The Noun Project - Thousands of free icons & symbols available as vector files. 

Fonts In Use - Catalog for identifying fonts used by real-world organizations. 

Dafont.com - Thousands of free & paid fonts.

Atomic Rockets - Thorough encyclopedia & reference guide for designing realistic spacecraft, space stations, space colonies, etc.

Consumer Aesthetic Research Institute - Ongoing catalog of visual & thematic styles found within print & commercial interiors. 

Dimensions.com - Dimensioned drawings of common/everyday items and spaces.

RetroWDW.com - Archive of vintage photos, maps & ephemera from Walt Disney World.  

Unsplash.com - Collection of thousands of free stock photos. 

ShadedRelief.com - Exhaustive resource for creating National Park Service maps and diagrams.

Old Robots - Visual catalog of thousands of vintage robots and robotic products.

Glossary of Occult Terms

Obsolete Occupations

Latin terms commonly used in systematic or scientific names

List of Urban Legends

Encyclopedia Astronautica

The Grand List of Overused Science Fiction Clichés

National Park Service Editorial Style Guide

Ted's Caving Page

The Alameda-Weehawken Burrito Tunnel

Holotypic Occlupanid Research Group

Saving the Pacific Northwest Tree Octopus

Furaha

How to Draw by Scott Robertson and Thomas Bertling 

Architecture: Form, Space, and Order by Francis D.K. Ching

Building Construction Illustrated by Francis D.K. Ching

H-Point: The Fundamentals of Car Design & Packaging by Geoff Wardle and Stuart Macey

Presentation Techniques by Dick Powell

Architects' Data by Ernst Neufert

Draplin Design Co.: Pretty Much Everything by Aaron Draplin

The Guild Handbook of Scientific Illustration by Elaine R. S. Hodges

On Writing: A Memoir of the Craft by Stephen King

The Elements of Style by William Strunk Jr.

United Nuclear Scientific Equipment & Supplies

McMaster-Carr Hardware, Tools, Raw Materials & Industrial Equipment
Compliance Signage

True Grit Texture Supply