Edible Landscaping, by Travis Beck and Martin F. Quigley, Department of Horticulture and Crop Science, The Ohio State University.
Elderberry, American elder (Sambucus canadensis) - Poisonous Plants of North Carolina
Elderberries - Black (American) Elderberry - Sambucus canadensis, Red (Scarlet) Elderberry - S. pubens, from the West Virginia Native Plant Society WV Nongame Wildlife Program.
Elderberries for Home Gardens, Ontario Ministery of Agriculture and Food.
Elderberries, Sambucus, spp. Minor Fruits, Department of Horticulture, Cornell University.
Elderberries. in Fruit Production for the Home Gardener: A Comprehensive Guide. Penn State Cooperative Extension.
Minor Fruits and Nuts In Georgia, Bulletin 992, Revised September, 1999.
Minor Small Fruit Crops for New Mexico Gardens, George W. Dickerson, Extension Horticulture Specialist, New Mexico State University. [In .pdf format]
Planning Your Fruit Garden, by Frank Morrison, Extension Horticulturist, Kansas State University. [In .pdf format]
Sambucus as a poisonous plant, North Carolina State University.
Statistik Austria - Agriculture, forestry, and fruit website. Elderberry data is available for years 2009, 2010, 2011 and 2012 in tabular format.