The International Concatenated Order of Hoo-Hoo, Incorporated is a fraternal and service organization with members in the forest products industry.

[citation needed] The first regular Concatenation was held at the St. Charles Hotel in New Orleans, Louisiana, on February 18, 1892, when 35 of the leading lumbermen of the country were initiated.

[1]: 232 Judicial affairs and care of the emblem were delegated to a House of the Ancients which consisted of the past executives of the Order and whose members served for life.

[5] Membership is currently limited to people 18 and up who are of good moral character and are engaged in the forestry industry or "genuinely interested in supporting the purpose and aims of our order".

A Mrs. M. A. Smith of Smithton, Arkansas, was initiated before the gender requirement was passed, so she stayed on as the order's only female member.

[2]The Order did not have any sick, disability, or death benefits, but it did quietly perform some charitable work among its members and assist them in finding employment.