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US2601161A
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Medium for use in making camera copy and method of preparing the same
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Method of making camera copy
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Drawing medium and method of making the same
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Medium for use in making camera copy and method of preparing same
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US2379915A
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Media for use in making camera copy and method of preparing same
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Medium for use in making camera copy and method of preparing the same
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Medium for producing images
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Media, process for the representation of figures, designs, drawings, etc., thereon and method of making said media
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Drawing and method of and medium for making the same
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US2224269A
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Drawing and method of and medium for making the same
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US2038516A
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Method of producing drawings or other compositions
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CA394479A
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Drawing making method
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