00821cam a22002171  4500001001300000003000400013005001700017008004100034010001700075035001900092040001800111050001600129100005000145245019600195250003400391260004800425300005100473500004700524650001700571650001500588ca 09005901 DLC20260227111051.0790608s1857    xx            000 0 eng    aca 09005901   a(OCoLC)5047118  aDLCcDeUdDLC00aTR390b.H921 aHumphrey, S. D.q(Samuel Dwight),d1823-1883.12aA practical manual of the collodion process,bgiving in detail a method for producing positive and negative pictures on glass and paper.  Ambrotypes.  Printing process ...cBy S. D. Humphrey.  a3d ed., rev. and greatly enl.  aNew York,bHumphrey's journal print,c1857.  a2 p. l., [xi]-xii, [13]-215 p.billus.c19 cm.  aPublisher's advertisement: 4 p. (at front) 0aPhotography. 0aAmbrotype.