Microsoft.SharePoint.Client.Online.CSOM 15.0.4919.1000

.NET Framework 4.0 
dotnet add package Microsoft.SharePoint.Client.Online.CSOM --version 15.0.4919.1000
NuGet\Install-Package Microsoft.SharePoint.Client.Online.CSOM -Version 15.0.4919.1000
This command is intended to be used within the Package Manager Console in Visual Studio, as it uses the NuGet module's version of Install-Package. 
<PackageReference Include="Microsoft.SharePoint.Client.Online.CSOM" Version="15.0.4919.1000" />
For projects that support PackageReference, copy this XML node into the project file to reference the package. 
paket add Microsoft.SharePoint.Client.Online.CSOM --version 15.0.4919.1000
#r "nuget: Microsoft.SharePoint.Client.Online.CSOM, 15.0.4919.1000"
#r directive can be used in F# Interactive and Polyglot Notebooks. Copy this into the interactive tool or source code of the script to reference the package. 
// Install Microsoft.SharePoint.Client.Online.CSOM as a Cake Addin
#addin nuget:?package=Microsoft.SharePoint.Client.Online.CSOM&version=15.0.4919.1000

// Install Microsoft.SharePoint.Client.Online.CSOM as a Cake Tool
#tool nuget:?package=Microsoft.SharePoint.Client.Online.CSOM&version=15.0.4919.1000

This package contains the SharePoint Client Side Object Model libraries for 2013 (on-premises)

Product Compatible and additional computed target framework versions.
.NET Framework net40 is compatible.  net403 was computed.  net45 was computed.  net451 was computed.  net452 was computed.  net46 was computed.  net461 was computed.  net462 was computed.  net463 was computed.  net47 was computed.  net471 was computed.  net472 was computed.  net48 was computed.  net481 was computed. 
Compatible target framework(s)
Included target framework(s) (in package)
Learn more about Target Frameworks and .NET Standard.

NuGet packages (4)

Showing the top 4 NuGet packages that depend on Microsoft.SharePoint.Client.Online.CSOM:

Package Downloads
cyberblast.SharePoint.Client

Adapter Library to communicate with SharePoint 2013. CSOM wrapper: will install CSOM NuGet Package as well.
Nuget_Herramientas

Package Description
SharePointSDK

Sharepoint online REST API SDK
PESS.Herramientas

Package Description

GitHub repositories

This package is not used by any popular GitHub repositories.

Version Downloads Last updated
15.0.4919.1000 186,826 6/8/2018
15.0.4859.1003 62,783 12/9/2016
15.0.4763.1000 37,248 12/7/2015

Be aware that the version of the client matches the version you have installed on the server. I got some messages that this version is newer than some people have installed on their server. So use the previous version, or make sure you have the latest patches installed on your server.