THEODORE R. McKELDIN, GOVERNOR                   183

placements, depreciation and necessary extension, and (b) the bonds
and the interest thereon as the same shall become due and reserves
for such purpose. Such rates, charges or contract provisions shall
not be subject to supervision or regulation by any other State or
City commission, board, bureau or agency. All revenues derived
from the Civic Center except such part thereof as may be required
to pay the cost of its maintenance, repair and operation and to pro-
vide such reserves as may be provided for in the resolution author-
izing the issuance of the bonds or in the trust indenture, shall be
set aside at such regular intervals as may be provided in such
resolution or such trust indenture, in a sinking fund which is hereby
pledged to, and charged with the payment of, the interest upon such
bonds as such interest shall fall due, the principal of the bonds as
the same shall fall due, the necessary fiscal agency charges for pay-
ing principal and interest, any premium upon bonds retired by call
or purchase, and additions to and improvements to the Civic Center,
all as may be provided in such resolution or trust indenture. The
use and disposition of such sinking fund shall be subject to such
regulations as may be provided in the resolution authorizing the
issuance of bonds, or in the trust indenture, but, except as may other-
wise be provided in such resolution or trust indenture, such sinking
fund shall be a fund for the benefit of all bonds without distinction
of the date of the resolution authorizing the issuance of bonds or
of the trust indenture. The resolution or trust indenture may pro-
vide that any moneys in such sinking fund in excess of an amount
equal to one year's interest on all bonds then outstanding may be
applied to the purchase or redemption of bonds. All bonds so pur-
chased or redeemed shall forthwith be cancelled.

SEC. 11.. And be it further enacted, That

(Remedies of Bondholders and Trustee.) Any holder of revenue
bonds issued under the provisions of this Act or of any of the coupons
attached thereto, and the trustee under the trust indenture, if any,
except to the extent the rights herein given may be restricted by
resolution passed before the issuance of the bonds or by the trust
indenture, may, either at law or in equity, by suit, action, mandamus,
or other proceedings, protect and enforce any and all rights under
the laws of Maryland or granted hereunder or under such resolution
or trust indenture, and may enforce and compel performance of all
duties required by this Act or by such resolution or trust indenture
to be performed by the Authority or by any officer or member there-
of, including the fixing, charging, and collecting of rates and charges
for the use of the facilities of the Civic Center.

SEC. 12. And be it further enacted, That

(Tax Exemption.) It is hereby found, determined and declared
that the establishment of the Civic Center under the provisions of
this Act is in all respects for the benefit of the inhabitants of the City
and is a public purpose, and that the City and the Authority will be
performing an essential governmental function in the exercise of the
powers conferred by this Act, and the Authority shall not be re-
quired to pay any taxes or assessments upon the Civic Center or any
part thereof or upon its activities in the operation and maintenance
of the Civic Center or upon any revenues therefrom, and the Civic
Center and the bonds of the Authority and the interest thereon and
any profits from the sale thereof shall be and remain forever exempt