References & Resources


References
The author gratefully acknowledges the use of the following references, without which the creation of this site would not have been possible:

Alexander, J. (2014, June 23). The British Mark I Brodie & the U.S. P17, Know the Difference. Retrieved from https://alexanderandsonsrestorations.com/british-mark-brodie-u-s-p17-know-difference/
Arundel Militaria. Rare WWI German Pickelhaube (photo). Retrieved from http://www.deactivated-guns.co.uk/militaria/rare-wwi-german-pickelhaube/prod_876.html
De Hovre, P. Casque Adrian Modèle 15. Retrieved from http://www.world-war-helmets.com/fiche?q=Casque-Francais-Adrian-Mle-15
The Great War Collection. M15 Pickelhaube – Prussia. Retrieved from https://greatwarcollection.weebly.com/m1915-pickelhaube---prussia.html
Haselgrove, M., Radovic, B. (2006). The History of the Steel Helmet in the First World War, Vol. 1 and Vol. 2. Atglen, PA: Schiffer Military History.
Madiot, X. Casque Mark I. Retrieved from http://www.world-war-helmets.com/fiche?q=Casque-Anglais-Mark-I
Miles Forum Italiano dei Collezionisti di Militaria. Dagli elmi Farina all'elmetto Adrian. Retrieved from https://miles.forumcommunity.net/?f=1613941
Niewiarowicz, K. (2014, Nov 10). FAQ. Retrieved from http://germanhelmetsinc.com/faq.htm
Pickelhaubes.com. Retreived from https://www.pickelhaubes.com/bb/index.php
Schnurr, T. (2011, Nov 26). Imperial German Feldgrau Helmets, 1914-1918. Retrieved from http://www.kaisersbunker.com/feldgrau/helmets/
Somers, J. (2005). Imperial German Field Uniforms and Equipment, 1907-1918. Atglen, PA: Schiffer Military History.
Trawnik, R., Schaal, R., Hartmann, W. (2009, June 18). Pickelhaube: The Story of the German Spiked Helmet. Retrieved from http://www.militarytrader.com/military-trader-news/pickelhaube_german_spiked_helmet
Vestiges Militaria. (2015, Dec 23). Le Casque d'acier. Retrieved from http://humanbonb.free.fr/indexCasqueall.html

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Resources
The following sites produce handmade, hard-to-find items you may need for the display of certain helmets in your collection. Both offer their version of the War Office Pattern liner:

The following eBay merchant produces the finest M15 Adrian liners I have found (far better than originals, in fact) and ships quickly from Ukraine. However, availability may be limited at this time: