More information:

Wylundt’s Book of Incense

 by Wylundt

The Encyclopedia of Magickal Ingredients: A Wiccan Guide to Spellcasting

 by Lexa Rosean

Magical Herbalism: The Secret Craft of the Wise

 by Scott Cunningham

Magical Aromatherapy: The Power of Scent by Scott Cunningham

The Woman’s Dictionary of Symbols and Sacred Objects

 by Barbara Walker