Assembly Rooms
From my research (or rather wondering on the internet) the following Temples have and an Assembly Room.
- Kirtland*
- Nauvoo†
- St. George‡
- Logan
- Manti
- Salt Lake
- Los Angeles
- Washington D.C.
- Portland Oregon**
* Has two.
† The original had two, the reconstruction only has one.
‡ Originally had two, the lower hall was converted to ordnance rooms.
** Also described as a special chapel.
Notice: We do not know 100% what exactly these initials originally stood for.
Kirtland
The Kirtland Temple has two halls (also called courts), both the upper and lower courts have the same initials.
Melchizedek Priesthood Pulpits West
(top to bottom)
- MPC Melchizedek Presiding Council; 1st Presidency
- PMH Presiding Melchizedek High Priesthood; Quorum of 12/Stake High Council
- MHP Melchizedek High Priesthood; High Priests
- PEM Presiding Elders Melchizedek; Elders Quorum
Aaronic Priesthood Pulpits East
(top to bottom)
- BPA Bishop Presiding over Aaronic Priesthood
- PAP Presiding Aaronic Priests
- PTA Presiding Teachers, Aaronic
- PDA Presiding Deacons, Aaronic
Nauvoo
I remember reading that the original Nauvoo Temple had initials in the lower hall. The upper hall did not have pulpits per say as the Saints did not 100% complete the temple, but they did have 4 rows of elevated benches (at least at the time the saints left Nauvoo).
In the reconstruction the space originally for the upper hall was used for the Endowment ordnance rooms. An Assembly Hall was built on the first floor, but like all Temples after the St. George, it does not have any initials on the pulpits.
St. George
The St. George Temple originally had two halls, with the lower one usually partitioned with curtains for the Endowment. Later this lower hall was remodeled to the modern floor lay out with discrete rooms for the Endowment.
Melchizedek Priesthood Pulpits
(top to bottom)
- PMPMH Presidents of the Melchizedek Priesthood of the Most High
- PSZ Presidents of the Stake of Zion
- PHPQ Presidents of the High Priests Quorums
- PEQ Presidents of the Elders Quorums
Aaronic Priesthood Pulpits
(top to bottom)
- PAP Presidents of the Aaronic Priesthood
- PPQ Presidents of the Priests Quorum
- PTQ Presidents of the Teachers Quorum
- PDQ Presidents of the Deacons Quorums