Okla. Stat. tit. 21, § 21-331

Any person, firm or corporation soliciting or collecting funds,

directly or indirectly for the primary purpose of promoting

legislation for any person or group receiving grants or allotments

from the state government must give a personal receipt for each

amount collected. Each receipt must be on a form approved by the

Oklahoma Tax Commission, must be made out in triplicate, one (1)

copy to be retained by the donee and one (1) copy to be given to the

donor and the third (3rd) copy must be sent to the Oklahoma Tax

Commission on the first of each month. Each receipt must bear the

date on which the money is received, must set forth the full name of

the contributor and must be signed by the person collecting the

money. Any person, firm, or corporation soliciting or collecting

monies for the above cited purpose must give the receipt immediately

after the money is received. Any person, firm or corporation

soliciting or collecting money through the mail for the above cited

reason must remit the receipt within five (5) days after receiving

the donation. No receipt form shall be used unless it has had the

prior approval of the Oklahoma Tax Commission.