<prompt> Qedela umusho olandelayo: I-Isaac Heffron House iyisakhiwo esinezitezi ezimbili esise-1509 Postoffice Street Avenue E e-East End Historic District yaseGalveston, eTexas. Le ndlu yakhiwa u-Isaac Heffron, usonkontileka ovelele waseGalveston esikhathini sikaVictoria nangesikhathi sokuvuselelwa kwedolobha kusukela  <response>: Isiphepho saseGalveston sango-1900. Kamuva, le ndlu yaba yikhaya likaT.J. Holbrook, owayengumengameli wesifundazwe saseTexas kusukela ngo-1922 kuya ku-1939. 