The incorporation of previously unspreadable molecules into host monolayers of a classic Langmuir-Blodgett material is investigated. Also, this process is used to induce a structural regime into monolayers that either do not exhibit a ’solid’ phase region in their isotherms, or need imposition of a stabilizing structure, in order to facilitate Langmuir-Blodgett film deposition. Molecules thus far deposited in mixed monolayers include 1-chlorooctadecane, 4-nitro-n-nonadecyl benzene and 4-nonadecyl phenylisothiocyanate. These have all been incorporated into a stearic acid host. Preliminary characterization studies of the deposited films have been carried out.