In 1989 the Field Recording Unit was moved to 
the northwest part of Argentina:specifically 
to the Province of Jujuy,boundary with the Re- 
public of Bolivia,and following the route by 
which the Spanish conquerors came from Peru 
400 years ago,it was performed the Photogramme 
tric Archives of many small colonial churches 
of Yavi;Uquia;Huacalera;Tilcara;Purmamarca;Tum 
baya,Santa Barbara and the Catedral of San Sal- 
vador of Jujuy.Also,plottings and photoeleva- 
tions wde made of some churches. 
During march 1990,the Recording Unit was trasla 
ted to the Republic of Guatemala,in particular 
to "Antigua Guatemala",that is 45 kms from Gua- 
temala City.This site is the jewel of the colo- 
nial architecture and urban planning,and it was 
included during 1979 as "Heritage of Humanity" 
by UNESCO. 
In this beautiful City,we performed the "Photo- 
grammetric Archives" of 37 fassades that belong 
to old churches,hermitages,and schools,damaged 
by the earthquakes of 1689,1717,1751 and the 
last of 1773,taking more than 400 negatives.The 
work was done under contract with the "Consejo 
Nacional para la proteccion de Antigua Guatema- 
la - CNPAG". 
After finished the work at Antigua,the Group 
was moved at 542 kms to the North,the Depart- 
ment of Peten,near is Tikal,: the largest and 
most important archeological center of the Maya 
Classic Period,discovered and studied to date. 
Tikal was declared in 1979 by UNESCO as "Monu- 
ment of the World's Cultural and Natural Heri- 
tage" ,in such a place the Mayas lived 600 year 
A.C.Also in this place we took metrical photo- 
graphs of the "Templo N? 2",of 38 mts height 
and built 700 years A.C,for archive purposes 
and for the Ministry of Culture and Sports,in 
the figure of Institute of Antropology and His 
tory IDAEH. € 
After Tikal,westarted to work in the "Ceren Si- 
te" of the Republic of Salvador.This site was 
discovered accidentally in 1976 during bulldo- 
zng associated with the construction of grain 
storage silos.The builders encountered the re- 
mains of an adobe structure.In 1978 Dr.Payson 
Sheets (University of Colorado) excavated part 
of this structure.The house and its contents 
were remarkably preserved,due to the burial of 
the site by large quantities of "volcanic ash" 
from the 600 A.C eruption from the nearest La- 
guna Caldera Vulcano.There exists two more hou- 
ses,one of them is the largest-measuring 5 x 8 
meters,it has solid adobe walls and is divided 
in two rooms.The Ceren Site was culturally lin- 
ked with inhabitans of San Andres Ceremonial 
Center (between 600 and 900 A.C) .The Direc- 
cion General del Patrimonio Nacional,ask also 
for the photogrammetric archives of the  Pala- 
cio Nacional,placed inthe center of the City. 
Also in 1990,the "National Theatre of Costa 
Rica" was surveyed photogrammetrically.The aim 
wasto establish the necesary documentation 
needed for restauration and also to be nomi- 
nated in the future as Humanity's Heritage.At 
the begining of 1991 we took notice that an 
earthquake distroyed seriously the building, 
then the authorities ask - for the plottings 
of the four fassades.This plotting was made in 
colaboration with the Spanish Guvernment. 
In 1991,all the activity was foccused in the 
most representatives buildings of the National 
University of La Plata (Museum of Natural 
Sciences;Main building of Rectorate;Faculty of 
Engineering;Faculty of Forestry and Agronomy; 
Astronomical Observatory;National College, 
Old Liceo for ladies;First Institue of Veteri- 
nary ),,also the building of the Highway 
Provincial State;the Police Headquarters and 
the local Children!s Hospital .From all this 
subjects was made the plotting and final dra- 
wing. 
At the begining of 1992,we started to adapt a 
K-21 reconnaissance aerial camera, reducing the 
format to 11,5 x 11,5 cms,for low altitude 
flights,in order to supplement information 
about historical and archeological sites. 
At this moment,the Photogrammetric Recording 
Unit of our University,started to apply the 
Simplified Photogrammetric Systems,using small 
format and no metric cameras ,according the 
last proposals made during the last five CIPA's 
meeting,over many buildings of the City of La 
Plata. 
Having in mind the various CIPA's Resolutions 
about the froblem of formation and teaching the 
applications of Photogrammetry in the field of 
Architecture and Archeology,it was performed se 
veral intensive Courses for Professionals and 
Techniciaf$ that works in the Conservation and 
Restauration,like the normal 40 hours Course ma 
de in five continuos days,as given in Antigua 
Guatemala at the C.N.P.A.G.Another Courses were 
performed for post-graduate level at many Uni- 
versities and National Societies of Architects 
in Argentina,Brasil,Costa Rica,Chile,Paraguay 
and Uruguay. 
The Courses offers a solid theorical basis ^: 
of aerial and terrestrial photogrammetry,inclu- 
ding the neces ary knowledge of topography,with 
practical  excersises done at home and in the 
field,in order to have all documents according 
the international doctrines for monuments and 
historical centres. 
Permanently the people of our University has 
been performed conferences in several National 
and Technical Congress,making exhibitions and 
teachingin many places,in order to let know,the 
applicattions of Photogrammetry to Heritage's 
Conservation. 
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