Nomina Insecta Nearctica was published in a series of 4 rather large volumes. This section contains Adobe Acrobat ® PDF files covering all four volumes. Rather than try to pdf each volume, the volumes have been broken down into separate volume. The breakdown into smaller files makes downloading easier and faster and also allows you to take only those particular segments of the checklist of interest to you.
Having said that, the parts can be stitched back together in any length file and in any particular sequence you wish if you have Adobe Acrobat (the program, not the reader). The internet also lists numerous programs for carrying out this procedure, some for sale and so freeware.
Superflous pages (blanks and title pages) have beeen eleminated.
I strongly suggest you read the introduction to any of the four volumes if you are not already familiar with the series.
The files are searchable, either through the species and generic indices and through the search facility of the Adobe Acrobat reader program.
Volume 1 - Coleoptera, Strepsiptera
Volume 2 - Hymenoptera, Mecoptera, Megaloptera, Neuroptera, Raphidioptera, Trichoptera
Volume 3 - Diptera, Lepidoptera, Siphonaptera
Volume 4 - The remaining orders