hare krsna maharaj, pamho, agtsp
following link may help householder devotees

http://prabhupadaletters1972.blogspot.in/search/label/grhasthas

http://prabhupadaletters1972.blogspot.in/search/label/wife.

it is compendium of SP letters by tags of grhasthas and wife.

regards,
harsh

                HpS - ASA - UG   -   Jaya!    AGTSP   paoho.   Thank you so much Harsh  Prabhu.   Only comment is that we have to be careful with "Letters from Prabhupada", because in a letter to Brahmananda Das in the beginning of ISKCON he says that we his letters should not be circulated publicly unless he tells to do it because many times they are individual instrictions.      Also, some times the letters were not written by Prabhupada. He gave general instructions to his Secretary at the time and then the Secretary wrote. So although authorized we may have to adjust the advice of Prabhupada en terms of who sent the message and to whom it was intended.   His books are always the standard fo rjudging things.