Whakarāpopototia te tuhinga:  He tohu rautaki motuhake ēnei i kitea puta noa i Amerika, e akiaki ana i ngā kaihoe me ngā kaihaereere ki te whakaaro he aha te tikanga o ēnei tohu, ā, e tohu ana ki whea. Engari ko ēnei pere nui, e taea ana te whanganga kia 70 ft te roa, he toenga warewaretia o tētahi wā kua pahemo. I ngā wāhi i waenganui i te ngahere, i whakanohoia ki ngā wāhi āhua pōhara, he tohu ēnei pere nui mō ngā rerenga īmēra rererangi o mua puta noa i te US - e hanga ana i te pūnaha whakatere whenua tuatahi o te ao. He pere raima nui i kitea i roto i te ahua tino pai i Bloomington, Washington County, Utah. Ko te pere Bloomnigton tetahi o te 102 i kitea e te tokorua kua reti a Brian raua ko Charlotte Smith, i haereere puta noa i te US ki te whakaahua i nga whakamaharatanga. I whakanohoia ngā pere raima ki te turanga o ngā rama rama e tata ana ki ngā ara hau, e whakaatu ana ki ngā paerata te aronga e hiahiatia ana e rātau ki te rere kia tae atu ai ki te tūnga e whai ake nei ki te tuku mēra. I timata te Airmail i te US i te timatanga o te tau 1911, me te rerenga mana tuatahi i wehe atu i Petaluma, California, ka tae ki Santa Rosa, California. I te roa haere o ngā rerenga, me te maha ake o ngā tūnga, ka whakatakotoria ngā tohu me ngā pere hei āwhina i ngā kaihautū i a rātau e rere ana. Whai muri i te Pakanga Tuatahi o te Ao, ka tiimata te Ratonga Pouaka a US ki te whakamahi i nga rererangi pakanga mo te tuku mēra me te maha i rerehia e nga paerata hoia o mua. Ko ngā pere e tohu ana i tētahi wā i roto i te hītori i te tīmatanga o te rau tau 21 i te wā i tīmata ai te US Postal service ki te tuku mēra hau. He tino pai ki nga maunga hukarere o Nevada, i whakaahuahia tenei pere i Golconda, Humboldt County. I hopukina i te taha o te taone iti o Medicine Bow i Wyoming, i runga i te huarahi rongonui o New York ki San Francisco tenei tohu. Ko tētahi o ngā ara rere tino hira, me te tuatahi ki te whakaotihia, i totoro puta noa i te US i New York ki San Francisco. I tīmata te whakatakoto i ngā pere nui puta noa i te motu, i ētahi wā i ngā tawhiti 10 māero, mai i te tau 1924. I peitahia ki te kowhai mārama, ā, i whakatakotoria ki te taha o te tohu māramatanga me te rama hau i runga, ko te whakaaro kia kitea ai ngā tohu mō...
He maha nga wa ka tutuki nga kaihaerere ki nga tohu raima rereke ka miharo he aha i hangaia ai ratou. Ko ngā pere i ārahi i ngā waka rererangi tuatahi puta noa i Te Hononga o Amerika ki te tuku mēra. I takoto rātau i raro i ngā rama rama e whakaatu ana i ngā paerata ki te rere ki te taunga rererangi e whai ake nei. Ahakoa kaore i te whakamahia, he maha nga mea kua warewarehia kia kitea ra ano e nga kaiwhaiwhai pere.