Catalogue. A.H. Abbott & co., manufacturers and importers of mathematical and surveying instruments and drawing materials of every description .. (1896)
Abbott, A. H., & co., Chicago. [from old catalog] · [Chicago] · leaf 184
e thinned with water ab libitum; distilled water or clean rain water (filtered, if necessary, through blotting paper), being preferable to the ordinarysorts. In the case of W. & N. black ink it is well to make the water slightly alkaline with a littleammonia solution, say half a dozen drops to… … 4 ^ LB AN Pure.Unchan f ^graphic Whiryse in Draw inReproductive Or0faw//7g& in D lack and tise w/nsor &Newfo £*ECIAL PROCES cohjuncrion uuilh ^iInsor &. n e wRalhbone PlaceFNCI.AN. 2099
Drawing instruments
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