I believe you can find pieces of these maps at the Ike Skelton Combined Arms Research Library Digital Library here
https://cgsc.contentdm.oclc.org/digital/collection/p4013coll8/search/searchterm/World War%2C 1939-1945 -- Campaigns -- Northern Mariana Islands -- Saipan./field/subjec/mode/exact/conn/and
They are in pieces, but you can do a search on their digital library for "special air and gunnery target map" for all of them.
