There really is now way to contact them and no reason to unless you were the unfortunate victim of one of their scams. All the publicly release is a PO Box in Buffalo, NY. Of course, considering that they often tell people that they were standing outside of their homes "to feel the vibes", you could always look outside once in a while and maybe you will see them (sarcasm).
La engorian appears to be the name of a society that takes personal information and use it to send them deceptive claims. Some people claim to have had negative experiences with this company. See their stories at the related link below.
Other than the fact it's a scamming/phishing company, I can't tell anything about the word "Engorian", it does not mean anything in French.
The address of the Historical Society Of La Verne is: 1984 5Th Street, La Verne, CA 91750
The address of the La Quinta Historical Society is: Po Box 1283, La Quinta, CA 92247
The web address of the Historical Society Of La Verne is: www,LaVerneHistoricalSociety.org
The web address of the La Puente Valley Historical Society is: www.lpvhistoricalsociety.org
The web address of the La Mesa Historical Society Inc is: Lamesahistory.com
The address of the La Puente Valley Historical Society is: Po Box 522, La Puente, CA 91747
The address of the La Mesa Historical Society Inc is: Po Box 882, La Mesa, CA 91944
The address of the La Crescent Area Hist Society is: Po Box 193, La Crescent, MN 55947-0193
The address of the La Crosse County Historical Society is: Po Box 1272, La Crosse, WI 54602-1272
The web address of the La Historia Society is: http://lahistoriasociety.com