If you own this stamp. That stamp is part of the "Scott R24" (?) series made from 1862 to 1871. You can purchase one on eBay for around $1. There are varieties, such as a cracked plate, that can be valued at several hundred dollars, but that will require expertization to determine.
The main sources of revenue in the 1800s-1860s were: Revenue Tariff, Land Sales, and Income Tax.
they were one of the few sources of revenue for government.
A collector might purchase them. But note that this is not from the 1800's. The stamp was issued in 1981.
The 1800s refers to the year that the item pictured on the stamp was used, not when the stamp was issued. It has a minimal value.
Philadelphia-Pittsburgh Turnpike
development of the internal combustion engine.
building codes were issued to ensure safety to tenement residents in cities
The silver certificate you have is a one-dollar bill from the series of 1899. It features a portrait of Martha Washington, the wife of President George Washington, on the front. The serial number does not provide any specific information beyond being part of a collection of silver certificates issued in the late 1800s.
Development of the internal combustion engine
development of the internal combustion engine.
The Scott catalog number for this stamp is 2252 . The wagon stamp was not issued in 1866, it was issued in1987. The carriage was made about 1800. The stamp has a minimal value.
Many unions experience divisions related to members being split over decisions regarding strikes, during the late 1800s and early 1900s. This resulted in large unions splitting into smaller ones.