This Technical Manual TM 3-4240-264-34P covers the M51 Trailer-Transported Inflatable CB Collective Protection Shelter System and is dated November 1975. For collectors of U.S. Army technical manuals, Chemical Corps material, Cold War protective equipment, and military field-support literature, this is a strong period reference tied to a specialized and less commonly encountered Army collective-protection system.
Because this is a -34P technical manual, it belongs to the repair parts and special tools side of Army documentation at the higher maintenance level. Manuals in this category were intended to support the identification of assemblies, components, repair parts, and special tools required to keep equipment serviceable. That gives this publication strong technical and workshop-oriented value for collectors, researchers, and restorers.
The M51 Trailer-Transported Inflatable CB Collective Protection Shelter System
The M51 belongs to the broader family of U.S. military collective protection and chemical-biological support equipment. As identified by its nomenclature, it was a trailer-transported inflatable shelter system designed for CB collective protection, placing it squarely in the support side of Army protective operations rather than in the category of conventional weapons or vehicles.
A shelter system of this type was intended to provide a protected enclosed space for personnel in environments where chemical or biological contamination was a concern. The fact that it was both inflatable and trailer transported makes it especially interesting from a historical standpoint, because it reflects the Army’s effort to create mobile, deployable protected environments rather than relying only on fixed shelters or permanent installations.
For collectors, that makes this manual especially appealing. It documents the technical side of Cold War protective systems rather than more commonly seen combat equipment, and it ties directly to one of the more unusual categories of Army field-support gear.
What This Manual Covers
As a repair parts and special tools technical manual, TM 3-4240-264-34P would have been intended to support the higher-level maintenance and parts-support functions for the M51 shelter system.
In practical terms, a manual like this is especially relevant for:
That makes it valuable not only as a collectible, but also as a practical reference for anyone studying how the Army supported collective-protection shelter systems during the late Cold War period.
Historical Significance
The date November 1975 places this publication in the later Cold War period, when the U.S. military maintained extensive technical literature covering collective protection, chemical-biological defense, filtration, decontamination, and protected-environment support systems. Manuals like this reflect a period when Army documentation extended far beyond weapons and vehicles to include the equipment required to help units remain operational in hazardous conditions.
For collectors and historians, this manual is especially relevant to subjects such as:
Because it covers a specialized trailer-transported inflatable shelter rather than a more common vehicle or weapon system, it also adds variety to collections that already include standard ordnance or maintenance manuals.
About This Manual
This listing is for Technical Manual TM 3-4240-264-34P for the M51 Trailer-Transported Inflatable CB Collective Protection Shelter System, dated November 1975.
It is especially well suited for:
Because manuals were working documents, surviving examples are valued not only for their content, but also for their connection to real military maintenance and support practice.
Why This Manual Matters
Many military manuals focus on weapons, vehicles, or combat systems. This one documents the support side of military readiness, specifically a mobile collective-protection shelter system intended for hazardous environments. That makes it especially useful for collectors who want to preserve the broader technical and logistical picture of Army Cold War preparedness rather than only front-line hardware.
For collectors, it is a solid stand-alone Cold War technical manual with a specialized subject focus. For researchers, it offers a useful reference point for Army collective-protection shelter documentation, repair-parts support, and maintenance practice. For museums, it helps explain the behind-the-scenes systems that supported operations in contaminated or threatened environments.
Ideal For
This manual is a strong fit for:
Approx length 11", Approx width 8.5", Approx height .75", Approx weight 1.5lbs.
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