The Initial Experiment Gridded Data Record (IEGDR) archive (V2.0) contains preliminary versions of the MEGDRs, which are global topographic maps of Mars generated using MGS-MOLA altimetry data (superseded by MGS-M-MOLA-5-MEGDR-L3-V1.0).

Citation Smith, D. E., MOLA INITIAL EXPERIMENT GRIDDED DATA RECORD, MGS-M-MOLA-5-IEGDR-L3-V2.0, NASA Planetary Data System, 1999
Digital Object Identifier (DOI) 10.17189/1519447
Data Set Abstract The Mars Global Surveyor spacecraft included a laser altimeter instrument. The primary objective of the Mars Orbiter Laser Altimeter (MOLA) is to determine globally the topography of Mars at a level suitable for addressing problems in geology and geophysics.
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    Additional Information
    Mission Information MARS GLOBAL SURVEYOR
    Data Set Information MGS-M-MOLA-5-IEGDR-L3-V2.0
    Instrument Host Information MGS
    Instrument Information MOLA
    Target Information MARS