... It should be understood that wives of non-member husbands should not be recommended to the temple to receive their endowments. If they have previously had their endowments, then temple recommends might be issued to them provided they are in every way worthy, but even in such an event it is recommended that the wife receive the written consent of the husband before the recommend is issued. Worthy female members of the Church who are married to husbands who are not worthy to go to the temple must secure the written consent of their husbands, and in addition, the branch president or mission president should interview the husband to satisfy himself that there is no objection on his part to his wife's receiving her endowments in the temple. It is not necessary that worthy brethren receive the consent of their wives, whether the wives be non-members or unworthy of temple recommends, in order that they may be recommended to the temple for their own endowments or to do other ordinance work.
[David O. McKay, Stephen L. Richards, and J. Reuben Clark Jr. to Presidents of Missions in Europe, June 20, 1955, quoted in Anderson, Devery; The Development of LDS Temple Worship, 1846-2000: A Documentary History, http://amzn.to/TempleWorship]