U.S. Johnson Map Project
U.S. Johnson Map Project (JMP) bụ ọgbakọ anaghị akwụ ụgwọ maka ọrụ ya bụ ichekwa ọrụ onye mbipụta America Alvin J. Johnson, gụnyere atlases na akwụkwọ ya.  Ọrụ ahụ na-egosipụta ọrụ nke Ira S. Lourie, onye mụọla ọrụ Johnson kemgbe 1985.[1]  JMP na-enye data nke oru ngo anakọtara n'efu na webụsaịtị ya, JohnsonMapProject.org.￼

.Johnson bụ onye mbipụta nke ukwuu nke atlases, na e bipụtara "Johnson's Family Atlas" ya site na 1860 ruo 1887.[1]  N'ime afọ 27 e bipụtara ha, Johnson ji maapụ 67 dị iche iche nke United States na steeti ya na ụdị 658 nke maapụ ndị ahụ na atlases ndị ahụ.[2]  JMP anakọtala data na ụdịdị 658 ndị a, nke ọ na-egosi na webụsaịtị ya n'efu.  Ihe data a bara uru n'ịchọpụta na mkpakọrịta nwoke na nwaanyị rụrụ arụ maapụ Johnson atlas ewepụrụ na atlases.  Weebụsaịtị ahụ gụnyere ikike “Map Identifier” maka ebumnuche a.  Weebụsaịtị ahụ nwekwara gallery nke maapụ atlas US nke Johnson nke na-enye nkọwa zuru ezu onyonyo nke ọ bụla n'ime maapụ 67 ahụ, nke The David Rumsey Historical Map Collection nyere JMP.[3]

.Tụkwasị na nke ahụ, JMP amụwo maapụ Johnson dị n'ahịa ahịa ma mepụta "Rarity Index" nke ndị na-ere ahịa na ndị na-anakọta nwere ike iji ghọta uru nke map ha.  E gosipụtara mmepe nke “Rarity Index” maka ntụleghachi ya na Washington Map Society wee bipụta ya n'akwụkwọ akụkọ ya yana ndepụta “ ụkọ” nke ọ bụla n'ime ọdịiche 658 nke maapụ US nke Johnson.

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