Kongress is a kind of larger size sheet that Hahnemühle used to make.
The Library of Congress used it for endsheets for modern books in the
open stacks. It is archival, alpha-cellulose pulp, buffered
(unfortunately for marblers), embossed laid paper with a bright white
or neutral ivory tone. The laid pattern was more machine looking and
not as natural as Bugra and the other ingres. The grain was short, and
the sheet size about 26 X 40".
It is NOT the same as the sheet smaller size sheets of Ingres- about 19
x 25 inches, and come in a wide range of colors- that are commonly sold
I'll try tat Natur text- thugh I miss parent size Ingres papers taht I
usually marble. I don't see Arches MBM Ingres offered through NY
Central any more either, which was a nicer sort. Fabriano is sold
though but I don't like it as much, a bit weak forthe larger size.
Bugra and Zerkall papers (Niddegen, Frankfurt) are terrific, but
super-expensive these days.
I have looked at Crane, to see if they may have something suitable.
They DID- it was a nice tree-free Kenaf and Hemp paper with NO
buffering! It was called their Contiuum line, - BUT they have since
discontinued it ! (DARN!) . They have about 10,000 sheets left. It
was modestly priced and decent pulp.
I haven't tried the Strathmore "Charcoal" Ingres, of which a few
colors comes in a full-parent size sheet, grain long. Unfortunately,
the only lighter color they have in the large size is a bright white.
I prefer ivory/natural. It would be nice to find a domestic producer.
Yet I do think that some people are successfully using this paper,
though mainly the smaller size sheets? How does that compare to the
smaller Hahnemühle Ingres?